modules/luci-base/htdocs/luci-static/resources/cbi.js

   1 /*
   2         LuCI - Lua Configuration Interface
   3
   4         Copyright 2008 Steven Barth <steven@midlink.org>
   5         Copyright 2008-2012 Jo-Philipp Wich <jow@openwrt.org>
   6
   7         Licensed under the Apache License, Version 2.0 (the "License");
   8         you may not use this file except in compliance with the License.
   9         You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12 */
  13
  14 var cbi_d = [];
  15 var cbi_t = [];
  16 var cbi_strings = { path: {}, label: {} };
  17
  18 function Int(x) {
  19         return (/^-?\d+$/.test(x) ? +x : NaN);
  20 }
  21
  22 function Dec(x) {
  23         return (/^-?\d+(?:\.\d+)?$/.test(x) ? +x : NaN);
  24 }
  25
  26 function IPv4(x) {
  27         if (!x.match(/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/))
  28                 return null;
  29
  30         if (RegExp.$1 > 255 || RegExp.$2 > 255 || RegExp.$3 > 255 || RegExp.$4 > 255)
  31                 return null;
  32
  33         return [ +RegExp.$1, +RegExp.$2, +RegExp.$3, +RegExp.$4 ];
  34 }
  35
  36 function IPv6(x) {
  37         if (x.match(/^([a-fA-F0-9:]+):(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$/)) {
  38                 var v6 = RegExp.$1, v4 = IPv4(RegExp.$2);
  39
  40                 if (!v4)
  41                         return null;
  42
  43                 x = v6 + ':' + (v4[0] * 256 + v4[1]).toString(16)
  44                        + ':' + (v4[2] * 256 + v4[3]).toString(16);
  45         }
  46
  47         if (!x.match(/^[a-fA-F0-9:]+$/))
  48                 return null;
  49
  50         var prefix_suffix = x.split(/::/);
  51
  52         if (prefix_suffix.length > 2)
  53                 return null;
  54
  55         var prefix = (prefix_suffix[0] || '0').split(/:/);
  56         var suffix = prefix_suffix.length > 1 ? (prefix_suffix[1] || '0').split(/:/) : [];
  57
  58         if (suffix.length ? (prefix.length + suffix.length > 7) : (prefix.length > 8))
  59                 return null;
  60
  61         var i, word;
  62         var words = [];
  63
  64         for (i = 0, word = parseInt(prefix[0], 16); i < prefix.length; word = parseInt(prefix[++i], 16))
  65                 if (prefix[i].length <= 4 && !isNaN(word) && word <= 0xFFFF)
  66                         words.push(word);
  67                 else
  68                         return null;
  69
  70         for (i = 0; i < (8 - prefix.length - suffix.length); i++)
  71                 words.push(0);
  72
  73         for (i = 0, word = parseInt(suffix[0], 16); i < suffix.length; word = parseInt(suffix[++i], 16))
  74                 if (suffix[i].length <= 4 && !isNaN(word) && word <= 0xFFFF)
  75                         words.push(word);
  76                 else
  77                         return null;
  78
  79         return words;
  80 }
  81
  82 var cbi_validators = {
  83
  84         'integer': function()
  85         {
  86                 return !!Int(this);
  87         },
  88
  89         'uinteger': function()
  90         {
  91                 return (Int(this) >= 0);
  92         },
  93
  94         'float': function()
  95         {
  96                 return !!Dec(this);
  97         },
  98
  99         'ufloat': function()
 100         {
 101                 return (Dec(this) >= 0);
 102         },
 103
 104         'ipaddr': function()
 105         {
 106                 return cbi_validators.ip4addr.apply(this) ||
 107                         cbi_validators.ip6addr.apply(this);
 108         },
 109
 110         'ip4addr': function()
 111         {
 112                 var m = this.match(/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})(?:\/(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|\/(\d{1,2}))?$/);
 113                 return !!(m && IPv4(m[1]) && (m[2] ? IPv4(m[2]) : (m[3] ? cbi_validators.ip4prefix.apply(m[3]) : true)));
 114         },
 115
 116         'ip6addr': function()
 117         {
 118                 var m = this.match(/^([0-9a-fA-F:.]+)(?:\/(\d{1,3}))?$/);
 119                 return !!(m && IPv6(m[1]) && (m[2] ? cbi_validators.ip6prefix.apply(m[2]) : true));
 120         },
 121
 122         'ip4prefix': function()
 123         {
 124                 return !isNaN(this) && this >= 0 && this <= 32;
 125         },
 126
 127         'ip6prefix': function()
 128         {
 129                 return !isNaN(this) && this >= 0 && this <= 128;
 130         },
 131
 132         'cidr': function()
 133         {
 134                 return cbi_validators.cidr4.apply(this) ||
 135                         cbi_validators.cidr6.apply(this);
 136         },
 137
 138         'cidr4': function()
 139         {
 140                 var m = this.match(/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\/(\d{1,2})$/);
 141                 return !!(m && IPv4(m[1]) && cbi_validators.ip4prefix.apply(m[2]));
 142         },
 143
 144         'cidr6': function()
 145         {
 146                 var m = this.match(/^([0-9a-fA-F:.]+)\/(\d{1,3})$/);
 147                 return !!(m && IPv6(m[1]) && cbi_validators.ip6prefix.apply(m[2]));
 148         },
 149
 150         'ipnet4': function()
 151         {
 152                 var m = this.match(/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\/(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$/);
 153                 return !!(m && IPv4(m[1]) && IPv4(m[2]));
 154         },
 155
 156         'ipnet6': function()
 157         {
 158                 var m = this.match(/^([0-9a-fA-F:.]+)\/([0-9a-fA-F:.]+)$/);
 159                 return !!(m && IPv6(m[1]) && IPv6(m[2]));
 160         },
 161
 162         'ip6hostid': function()
 163         {
 164                 if (this == "eui64" || this == "random")
 165                         return true;
 166
 167                 var v6 = IPv6(this);
 168                 return !(!v6 || v6[0] || v6[1] || v6[2] || v6[3]);
 169         },
 170
 171         'ipmask': function()
 172         {
 173                 return cbi_validators.ipmask4.apply(this) ||
 174                         cbi_validators.ipmask6.apply(this);
 175         },
 176
 177         'ipmask4': function()
 178         {
 179                 return cbi_validators.cidr4.apply(this) ||
 180                         cbi_validators.ipnet4.apply(this) ||
 181                         cbi_validators.ip4addr.apply(this);
 182         },
 183
 184         'ipmask6': function()
 185         {
 186                 return cbi_validators.cidr6.apply(this) ||
 187                         cbi_validators.ipnet6.apply(this) ||
 188                         cbi_validators.ip6addr.apply(this);
 189         },
 190
 191         'port': function()
 192         {
 193                 var p = Int(this);
 194                 return (p >= 0 && p <= 65535);
 195         },
 196
 197         'portrange': function()
 198         {
 199                 if (this.match(/^(\d+)-(\d+)$/))
 200                 {
 201                         var p1 = +RegExp.$1;
 202                         var p2 = +RegExp.$2;
 203                         return (p1 <= p2 && p2 <= 65535);
 204                 }
 205
 206                 return cbi_validators.port.apply(this);
 207         },
 208
 209         'macaddr': function()
 210         {
 211                 return (this.match(/^([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}$/) != null);
 212         },
 213
 214         'host': function(ipv4only)
 215         {
 216                 return cbi_validators.hostname.apply(this) ||
 217                         ((ipv4only != 1) && cbi_validators.ipaddr.apply(this)) ||
 218                         ((ipv4only == 1) && cbi_validators.ip4addr.apply(this));
 219         },
 220
 221         'hostname': function()
 222         {
 223                 if (this.length <= 253)
 224                         return (this.match(/^[a-zA-Z0-9]+$/) != null ||
 225                                 (this.match(/^[a-zA-Z0-9_][a-zA-Z0-9_\-.]*[a-zA-Z0-9]$/) &&
 226                                  this.match(/[^0-9.]/)));
 227
 228                 return false;
 229         },
 230
 231         'network': function()
 232         {
 233                 return cbi_validators.uciname.apply(this) ||
 234                         cbi_validators.host.apply(this);
 235         },
 236
 237         'hostport': function(ipv4only)
 238         {
 239                 var hp = this.split(/:/);
 240
 241                 if (hp.length == 2)
 242                         return (cbi_validators.host.apply(hp[0], ipv4only) &&
 243                                 cbi_validators.port.apply(hp[1]));
 244
 245                 return false;
 246         },
 247
 248         'ip4addrport': function()
 249         {
 250                 var hp = this.split(/:/);
 251
 252                 if (hp.length == 2)
 253                         return (cbi_validators.ipaddr.apply(hp[0]) &&
 254                                 cbi_validators.port.apply(hp[1]));
 255                 return false;
 256         },
 257
 258         'ipaddrport': function(bracket)
 259         {
 260                 if (this.match(/^([^\[\]:]+):([^:]+)$/)) {
 261                         var addr = RegExp.$1
 262                         var port = RegExp.$2
 263                         return (cbi_validators.ip4addr.apply(addr) &&
 264                                 cbi_validators.port.apply(port));
 265                 } else if ((bracket == 1) && (this.match(/^\[(.+)\]:([^:]+)$/))) {
 266                         var addr = RegExp.$1
 267                         var port = RegExp.$2
 268                         return (cbi_validators.ip6addr.apply(addr) &&
 269                                 cbi_validators.port.apply(port));
 270                 } else if ((bracket != 1) && (this.match(/^([^\[\]]+):([^:]+)$/))) {
 271                         var addr = RegExp.$1
 272                         var port = RegExp.$2
 273                         return (cbi_validators.ip6addr.apply(addr) &&
 274                                 cbi_validators.port.apply(port));
 275                 } else {
 276                         return false;
 277                 }
 278         },
 279
 280         'wpakey': function()
 281         {
 282                 var v = this;
 283
 284                 if( v.length == 64 )
 285                         return (v.match(/^[a-fA-F0-9]{64}$/) != null);
 286                 else
 287                         return (v.length >= 8) && (v.length <= 63);
 288         },
 289
 290         'wepkey': function()
 291         {
 292                 var v = this;
 293
 294                 if ( v.substr(0,2) == 's:' )
 295                         v = v.substr(2);
 296
 297                 if( (v.length == 10) || (v.length == 26) )
 298                         return (v.match(/^[a-fA-F0-9]{10,26}$/) != null);
 299                 else
 300                         return (v.length == 5) || (v.length == 13);
 301         },
 302
 303         'uciname': function()
 304         {
 305                 return (this.match(/^[a-zA-Z0-9_]+$/) != null);
 306         },
 307
 308         'range': function(min, max)
 309         {
 310                 var val = Dec(this);
 311                 return (val >= +min && val <= +max);
 312         },
 313
 314         'min': function(min)
 315         {
 316                 return (Dec(this) >= +min);
 317         },
 318
 319         'max': function(max)
 320         {
 321                 return (Dec(this) <= +max);
 322         },
 323
 324         'rangelength': function(min, max)
 325         {
 326                 var val = '' + this;
 327                 return ((val.length >= +min) && (val.length <= +max));
 328         },
 329
 330         'minlength': function(min)
 331         {
 332                 return ((''+this).length >= +min);
 333         },
 334
 335         'maxlength': function(max)
 336         {
 337                 return ((''+this).length <= +max);
 338         },
 339
 340         'or': function()
 341         {
 342                 for (var i = 0; i < arguments.length; i += 2)
 343                 {
 344                         if (typeof arguments[i] != 'function')
 345                         {
 346                                 if (arguments[i] == this)
 347                                         return true;
 348                                 i--;
 349                         }
 350                         else if (arguments[i].apply(this, arguments[i+1]))
 351                         {
 352                                 return true;
 353                         }
 354                 }
 355                 return false;
 356         },
 357
 358         'and': function()
 359         {
 360                 for (var i = 0; i < arguments.length; i += 2)
 361                 {
 362                         if (typeof arguments[i] != 'function')
 363                         {
 364                                 if (arguments[i] != this)
 365                                         return false;
 366                                 i--;
 367                         }
 368                         else if (!arguments[i].apply(this, arguments[i+1]))
 369                         {
 370                                 return false;
 371                         }
 372                 }
 373                 return true;
 374         },
 375
 376         'neg': function()
 377         {
 378                 return cbi_validators.or.apply(
 379                         this.replace(/^[ \t]*![ \t]*/, ''), arguments);
 380         },
 381
 382         'list': function(subvalidator, subargs)
 383         {
 384                 if (typeof subvalidator != 'function')
 385                         return false;
 386
 387                 var tokens = this.match(/[^ \t]+/g);
 388                 for (var i = 0; i < tokens.length; i++)
 389                         if (!subvalidator.apply(tokens[i], subargs))
 390                                 return false;
 391
 392                 return true;
 393         },
 394         'phonedigit': function()
 395         {
 396                 return (this.match(/^[0-9\*#!\.]+$/) != null);
 397         },
 398         'timehhmmss': function()
 399         {
 400                 return (this.match(/^[0-6][0-9]:[0-6][0-9]:[0-6][0-9]$/) != null);
 401         },
 402         'dateyyyymmdd': function()
 403         {
 404                 if (this == null) {
 405                         return false;
 406                 }
 407                 if (this.match(/^(\d\d\d\d)-(\d\d)-(\d\d)/)) {
 408                         var year = RegExp.$1;
 409                         var month = RegExp.$2;
 410                         var day = RegExp.$2
 411
 412                         var days_in_month = [ 31, 28, 31, 30, 31, 30, 31, 31, 30 , 31, 30, 31 ];
 413                         function is_leap_year(year) {
 414                                 return ((year % 4) == 0) && ((year % 100) != 0) || ((year % 400) == 0);
 415                         }
 416                         function get_days_in_month(month, year) {
 417                                 if ((month == 2) && is_leap_year(year)) {
 418                                         return 29;
 419                                 } else {
 420                                         return days_in_month[month];
 421                                 }
 422                         }
 423                         /* Firewall rules in the past don't make sense */
 424                         if (year < 2015) {
 425                                 return false;
 426                         }
 427                         if ((month <= 0) || (month > 12)) {
 428                                 return false;
 429                         }
 430                         if ((day <= 0) || (day > get_days_in_month(month, year))) {
 431                                 return false;
 432                         }
 433                         return true;
 434
 435                 } else {
 436                         return false;
 437                 }
 438         }
 439 };
 440
 441
 442 function cbi_d_add(field, dep, index) {
 443         var obj = (typeof(field) === 'string') ? document.getElementById(field) : field;
 444         if (obj) {
 445                 var entry
 446                 for (var i=0; i<cbi_d.length; i++) {
 447                         if (cbi_d[i].id == obj.id) {
 448                                 entry = cbi_d[i];
 449                                 break;
 450                         }
 451                 }
 452                 if (!entry) {
 453                         entry = {
 454                                 "node": obj,
 455                                 "id": obj.id,
 456                                 "parent": obj.parentNode.id,
 457                                 "deps": [],
 458                                 "index": index
 459                         };
 460                         cbi_d.unshift(entry);
 461                 }
 462                 entry.deps.push(dep)
 463         }
 464 }
 465
 466 function cbi_d_checkvalue(target, ref) {
 467         var t = document.getElementById(target);
 468         var value;
 469
 470         if (!t) {
 471                 var tl = document.getElementsByName(target);
 472
 473                 if( tl.length > 0 && (tl[0].type == 'radio' || tl[0].type == 'checkbox'))
 474                         for( var i = 0; i < tl.length; i++ )
 475                                 if( tl[i].checked ) {
 476                                         value = tl[i].value;
 477                                         break;
 478                                 }
 479
 480                 value = value ? value : "";
 481         } else if (!t.value) {
 482                 value = "";
 483         } else {
 484                 value = t.value;
 485
 486                 if (t.type == "checkbox") {
 487                         value = t.checked ? value : "";
 488                 }
 489         }
 490
 491         return (value == ref)
 492 }
 493
 494 function cbi_d_check(deps) {
 495         var reverse;
 496         var def = false;
 497         for (var i=0; i<deps.length; i++) {
 498                 var istat = true;
 499                 reverse = false;
 500                 for (var j in deps[i]) {
 501                         if (j == "!reverse") {
 502                                 reverse = true;
 503                         } else if (j == "!default") {
 504                                 def = true;
 505                                 istat = false;
 506                         } else {
 507                                 istat = (istat && cbi_d_checkvalue(j, deps[i][j]))
 508                         }
 509                 }
 510
 511                 if (istat ^ reverse) {
 512                         return true;
 513                 }
 514         }
 515         return def;
 516 }
 517
 518 function cbi_d_update() {
 519         var state = false;
 520         for (var i=0; i<cbi_d.length; i++) {
 521                 var entry = cbi_d[i];
 522                 var node  = document.getElementById(entry.id);
 523                 var parent = document.getElementById(entry.parent);
 524
 525                 if (node && node.parentNode && !cbi_d_check(entry.deps)) {
 526                         node.parentNode.removeChild(node);
 527                         state = true;
 528                 } else if (parent && (!node || !node.parentNode) && cbi_d_check(entry.deps)) {
 529                         var next = undefined;
 530
 531                         for (next = parent.firstChild; next; next = next.nextSibling) {
 532                                 if (next.getAttribute && parseInt(next.getAttribute('data-index'), 10) > entry.index) {
 533                                         break;
 534                                 }
 535                         }
 536
 537                         if (!next) {
 538                                 parent.appendChild(entry.node);
 539                         } else {
 540                                 parent.insertBefore(entry.node, next);
 541                         }
 542
 543                         state = true;
 544                 }
 545
 546                 // hide optionals widget if no choices remaining
 547                 if (parent && parent.parentNode && parent.getAttribute('data-optionals'))
 548                         parent.parentNode.style.display = (parent.options.length <= 1) ? 'none' : '';
 549         }
 550
 551         if (entry && entry.parent) {
 552                 if (!cbi_t_update())
 553                         cbi_tag_last(parent);
 554         }
 555
 556         if (state) {
 557                 cbi_d_update();
 558         }
 559 }
 560
 561 function cbi_init() {
 562         var nodes;
 563
 564         nodes = document.querySelectorAll('[data-strings]');
 565
 566         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 567                 var str = JSON.parse(node.getAttribute('data-strings'));
 568                 for (var key in str) {
 569                         for (var key2 in str[key]) {
 570                                 var dst = cbi_strings[key] || (cbi_strings[key] = { });
 571                                     dst[key2] = str[key][key2];
 572                         }
 573                 }
 574         }
 575
 576         nodes = document.querySelectorAll('[data-depends]');
 577
 578         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 579                 var index = parseInt(node.getAttribute('data-index'), 10);
 580                 var depends = JSON.parse(node.getAttribute('data-depends'));
 581                 if (!isNaN(index) && depends.length > 0) {
 582                         for (var alt = 0; alt < depends.length; alt++) {
 583                                 cbi_d_add(node, depends[alt], index);
 584                         }
 585                 }
 586         }
 587
 588         nodes = document.querySelectorAll('[data-update]');
 589
 590         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 591                 var events = node.getAttribute('data-update').split(' ');
 592                 for (var j = 0, event; (event = events[j]) !== undefined; j++) {
 593                         cbi_bind(node, event, cbi_d_update);
 594                 }
 595         }
 596
 597         nodes = document.querySelectorAll('[data-choices]');
 598
 599         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 600                 var choices = JSON.parse(node.getAttribute('data-choices'));
 601                 var options = {};
 602
 603                 for (var j = 0; j < choices[0].length; j++)
 604                         options[choices[0][j]] = choices[1][j];
 605
 606                 var def = (node.getAttribute('data-optional') === 'true')
 607                         ? node.placeholder || '' : null;
 608
 609                 cbi_combobox_init(node, options, def,
 610                                   node.getAttribute('data-manual'));
 611         }
 612
 613         nodes = document.querySelectorAll('[data-dynlist]');
 614
 615         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 616                 var choices = JSON.parse(node.getAttribute('data-dynlist'));
 617                 var options = null;
 618
 619                 if (choices[0] && choices[0].length) {
 620                         options = {};
 621
 622                         for (var j = 0; j < choices[0].length; j++)
 623                                 options[choices[0][j]] = choices[1][j];
 624                 }
 625
 626                 cbi_dynlist_init(node, choices[2], choices[3], options);
 627         }
 628
 629         nodes = document.querySelectorAll('[data-type]');
 630
 631         for (var i = 0, node; (node = nodes[i]) !== undefined; i++) {
 632                 cbi_validate_field(node, node.getAttribute('data-optional') === 'true',
 633                                    node.getAttribute('data-type'));
 634         }
 635
 636         cbi_d_update();
 637 }
 638
 639 function cbi_bind(obj, type, callback, mode) {
 640         if (!obj.addEventListener) {
 641                 obj.attachEvent('on' + type,
 642                         function(){
 643                                 var e = window.event;
 644
 645                                 if (!e.target && e.srcElement)
 646                                         e.target = e.srcElement;
 647
 648                                 return !!callback(e);
 649                         }
 650                 );
 651         } else {
 652                 obj.addEventListener(type, callback, !!mode);
 653         }
 654         return obj;
 655 }
 656
 657 function cbi_combobox(id, values, def, man, focus) {
 658         var selid = "cbi.combobox." + id;
 659         if (document.getElementById(selid)) {
 660                 return
 661         }
 662
 663         var obj = document.getElementById(id)
 664         var sel = document.createElement("select");
 665                 sel.id = selid;
 666                 sel.index = obj.index;
 667                 sel.className = obj.className.replace(/cbi-input-text/, 'cbi-input-select');
 668
 669         if (obj.nextSibling) {
 670                 obj.parentNode.insertBefore(sel, obj.nextSibling);
 671         } else {
 672                 obj.parentNode.appendChild(sel);
 673         }
 674
 675         var dt = obj.getAttribute('cbi_datatype');
 676         var op = obj.getAttribute('cbi_optional');
 677
 678         if (!values[obj.value]) {
 679                 if (obj.value == "") {
 680                         var optdef = document.createElement("option");
 681                         optdef.value = "";
 682                         optdef.appendChild(document.createTextNode(typeof(def) === 'string' ? def : cbi_strings.label.choose));
 683                         sel.appendChild(optdef);
 684                 } else {
 685                         var opt = document.createElement("option");
 686                         opt.value = obj.value;
 687                         opt.selected = "selected";
 688                         opt.appendChild(document.createTextNode(obj.value));
 689                         sel.appendChild(opt);
 690                 }
 691         }
 692
 693         for (var i in values) {
 694                 var opt = document.createElement("option");
 695                 opt.value = i;
 696
 697                 if (obj.value == i) {
 698                         opt.selected = "selected";
 699                 }
 700
 701                 opt.appendChild(document.createTextNode(values[i]));
 702                 sel.appendChild(opt);
 703         }
 704
 705         var optman = document.createElement("option");
 706         optman.value = "";
 707         optman.appendChild(document.createTextNode(typeof(man) === 'string' ? man : cbi_strings.label.custom));
 708         sel.appendChild(optman);
 709
 710         obj.style.display = "none";
 711
 712         if (dt)
 713                 cbi_validate_field(sel, op == 'true', dt);
 714
 715         cbi_bind(sel, "change", function() {
 716                 if (sel.selectedIndex == sel.options.length - 1) {
 717                         obj.style.display = "inline";
 718                         sel.blur();
 719                         sel.parentNode.removeChild(sel);
 720                         obj.focus();
 721                 } else {
 722                         obj.value = sel.options[sel.selectedIndex].value;
 723                 }
 724
 725                 try {
 726                         cbi_d_update();
 727                 } catch (e) {
 728                         //Do nothing
 729                 }
 730         })
 731
 732         // Retrigger validation in select
 733         if (focus) {
 734                 sel.focus();
 735                 sel.blur();
 736         }
 737 }
 738
 739 function cbi_combobox_init(id, values, def, man) {
 740         var obj = (typeof(id) === 'string') ? document.getElementById(id) : id;
 741         cbi_bind(obj, "blur", function() {
 742                 cbi_combobox(obj.id, values, def, man, true);
 743         });
 744         cbi_combobox(obj.id, values, def, man, false);
 745 }
 746
 747 function cbi_filebrowser(id, defpath) {
 748         var field   = document.getElementById(id);
 749         var browser = window.open(
 750                 cbi_strings.path.browser + ( field.value || defpath || '' ) + '?field=' + id,
 751                 "luci_filebrowser", "width=300,height=400,left=100,top=200,scrollbars=yes"
 752         );
 753
 754         browser.focus();
 755 }
 756
 757 function cbi_browser_init(id, resource, defpath)
 758 {
 759         function cbi_browser_btnclick(e) {
 760                 cbi_filebrowser(id, defpath);
 761                 return false;
 762         }
 763
 764         var field = document.getElementById(id);
 765
 766         var btn = document.createElement('img');
 767         btn.className = 'cbi-image-button';
 768         btn.src = (resource || cbi_strings.path.resource) + '/cbi/folder.gif';
 769         field.parentNode.insertBefore(btn, field.nextSibling);
 770
 771         cbi_bind(btn, 'click', cbi_browser_btnclick);
 772 }
 773
 774 function cbi_dynlist_init(parent, datatype, optional, choices)
 775 {
 776         var prefix = parent.getAttribute('data-prefix');
 777         var holder = parent.getAttribute('data-placeholder');
 778
 779         var values;
 780
 781         function cbi_dynlist_redraw(focus, add, del)
 782         {
 783                 values = [ ];
 784
 785                 while (parent.firstChild)
 786                 {
 787                         var n = parent.firstChild;
 788                         var i = +n.index;
 789
 790                         if (i != del)
 791                         {
 792                                 if (n.nodeName.toLowerCase() == 'input')
 793                                         values.push(n.value || '');
 794                                 else if (n.nodeName.toLowerCase() == 'select')
 795                                         values[values.length-1] = n.options[n.selectedIndex].value;
 796                         }
 797
 798                         parent.removeChild(n);
 799                 }
 800
 801                 if (add >= 0)
 802                 {
 803                         focus = add+1;
 804                         values.splice(focus, 0, '');
 805                 }
 806                 else if (values.length == 0)
 807                 {
 808                         focus = 0;
 809                         values.push('');
 810                 }
 811
 812                 for (var i = 0; i < values.length; i++)
 813                 {
 814                         var t = document.createElement('input');
 815                                 t.id = prefix + '.' + (i+1);
 816                                 t.name = prefix;
 817                                 t.value = values[i];
 818                                 t.type = 'text';
 819                                 t.index = i;
 820                                 t.className = 'cbi-input-text';
 821
 822                         if (i == 0 && holder)
 823                         {
 824                                 t.placeholder = holder;
 825                         }
 826
 827                         var b = document.createElement('img');
 828                                 b.src = cbi_strings.path.resource + ((i+1) < values.length ? '/cbi/remove.gif' : '/cbi/add.gif');
 829                                 b.className = 'cbi-image-button';
 830
 831                         parent.appendChild(t);
 832                         parent.appendChild(b);
 833                         if (datatype == 'file')
 834                         {
 835                                 cbi_browser_init(t.id, null, parent.getAttribute('data-browser-path'));
 836                         }
 837
 838                         parent.appendChild(document.createElement('br'));
 839
 840                         if (datatype)
 841                         {
 842                                 cbi_validate_field(t.id, ((i+1) == values.length) || optional, datatype);
 843                         }
 844
 845                         if (choices)
 846                         {
 847                                 cbi_combobox_init(t.id, choices, '', cbi_strings.label.custom);
 848                                 b.index = i;
 849
 850                                 cbi_bind(b, 'keydown',  cbi_dynlist_keydown);
 851                                 cbi_bind(b, 'keypress', cbi_dynlist_keypress);
 852
 853                                 if (i == focus || -i == focus)
 854                                         b.focus();
 855                         }
 856                         else
 857                         {
 858                                 cbi_bind(t, 'keydown',  cbi_dynlist_keydown);
 859                                 cbi_bind(t, 'keypress', cbi_dynlist_keypress);
 860
 861                                 if (i == focus)
 862                                 {
 863                                         t.focus();
 864                                 }
 865                                 else if (-i == focus)
 866                                 {
 867                                         t.focus();
 868
 869                                         /* force cursor to end */
 870                                         var v = t.value;
 871                                         t.value = ' '
 872                                         t.value = v;
 873                                 }
 874                         }
 875
 876                         cbi_bind(b, 'click', cbi_dynlist_btnclick);
 877                 }
 878         }
 879
 880         function cbi_dynlist_keypress(ev)
 881         {
 882                 ev = ev ? ev : window.event;
 883
 884                 var se = ev.target ? ev.target : ev.srcElement;
 885
 886                 if (se.nodeType == 3)
 887                         se = se.parentNode;
 888
 889                 switch (ev.keyCode)
 890                 {
 891                         /* backspace, delete */
 892                         case 8:
 893                         case 46:
 894                                 if (se.value.length == 0)
 895                                 {
 896                                         if (ev.preventDefault)
 897                                                 ev.preventDefault();
 898
 899                                         return false;
 900                                 }
 901
 902                                 return true;
 903
 904                         /* enter, arrow up, arrow down */
 905                         case 13:
 906                         case 38:
 907                         case 40:
 908                                 if (ev.preventDefault)
 909                                         ev.preventDefault();
 910
 911                                 return false;
 912                 }
 913
 914                 return true;
 915         }
 916
 917         function cbi_dynlist_keydown(ev)
 918         {
 919                 ev = ev ? ev : window.event;
 920
 921                 var se = ev.target ? ev.target : ev.srcElement;
 922
 923                 if (se.nodeType == 3)
 924                         se = se.parentNode;
 925
 926                 var prev = se.previousSibling;
 927                 while (prev && prev.name != prefix)
 928                         prev = prev.previousSibling;
 929
 930                 var next = se.nextSibling;
 931                 while (next && next.name != prefix)
 932                         next = next.nextSibling;
 933
 934                 /* advance one further in combobox case */
 935                 if (next && next.nextSibling.name == prefix)
 936                         next = next.nextSibling;
 937
 938                 switch (ev.keyCode)
 939                 {
 940                         /* backspace, delete */
 941                         case 8:
 942                         case 46:
 943                                 var del = (se.nodeName.toLowerCase() == 'select')
 944                                         ? true : (se.value.length == 0);
 945
 946                                 if (del)
 947                                 {
 948                                         if (ev.preventDefault)
 949                                                 ev.preventDefault();
 950
 951                                         var focus = se.index;
 952                                         if (ev.keyCode == 8)
 953                                                 focus = -focus+1;
 954
 955                                         cbi_dynlist_redraw(focus, -1, se.index);
 956
 957                                         return false;
 958                                 }
 959
 960                                 break;
 961
 962                         /* enter */
 963                         case 13:
 964                                 cbi_dynlist_redraw(-1, se.index, -1);
 965                                 break;
 966
 967                         /* arrow up */
 968                         case 38:
 969                                 if (prev)
 970                                         prev.focus();
 971
 972                                 break;
 973
 974                         /* arrow down */
 975                         case 40:
 976                                 if (next)
 977                                         next.focus();
 978
 979                                 break;
 980                 }
 981
 982                 return true;
 983         }
 984
 985         function cbi_dynlist_btnclick(ev)
 986         {
 987                 ev = ev ? ev : window.event;
 988
 989                 var se = ev.target ? ev.target : ev.srcElement;
 990                 var input = se.previousSibling;
 991                 while (input && input.name != prefix) {
 992                         input = input.previousSibling;
 993                 }
 994
 995                 if (se.src.indexOf('remove') > -1)
 996                 {
 997                         input.value = '';
 998
 999                         cbi_dynlist_keydown({
1000                                 target:  input,
1001                                 keyCode: 8
1002                         });
1003                 }
1004                 else
1005                 {
1006                         cbi_dynlist_keydown({
1007                                 target:  input,
1008                                 keyCode: 13
1009                         });
1010                 }
1011
1012                 return false;
1013         }
1014
1015         cbi_dynlist_redraw(NaN, -1, -1);
1016 }
1017
1018
1019 function cbi_t_add(section, tab) {
1020         var t = document.getElementById('tab.' + section + '.' + tab);
1021         var c = document.getElementById('container.' + section + '.' + tab);
1022
1023         if( t && c ) {
1024                 cbi_t[section] = (cbi_t[section] || [ ]);
1025                 cbi_t[section][tab] = { 'tab': t, 'container': c, 'cid': c.id };
1026         }
1027 }
1028
1029 function cbi_t_switch(section, tab) {
1030         if( cbi_t[section] && cbi_t[section][tab] ) {
1031                 var o = cbi_t[section][tab];
1032                 var h = document.getElementById('tab.' + section);
1033                 for( var tid in cbi_t[section] ) {
1034                         var o2 = cbi_t[section][tid];
1035                         if( o.tab.id != o2.tab.id ) {
1036                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab( |$)/, " cbi-tab-disabled ");
1037                                 o2.container.style.display = 'none';
1038                         }
1039                         else {
1040                                 if(h) h.value = tab;
1041                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab-disabled( |$)/, " cbi-tab ");
1042                                 o2.container.style.display = 'block';
1043                         }
1044                 }
1045         }
1046         return false
1047 }
1048
1049 function cbi_t_update() {
1050         var hl_tabs = [ ];
1051         var updated = false;
1052
1053         for( var sid in cbi_t )
1054                 for( var tid in cbi_t[sid] )
1055                 {
1056                         var t = cbi_t[sid][tid].tab;
1057                         var c = cbi_t[sid][tid].container;
1058
1059                         if (!c.firstElementChild) {
1060                                 t.style.display = 'none';
1061                         }
1062                         else if (t.style.display == 'none') {
1063                                 t.style.display = '';
1064                                 t.className += ' cbi-tab-highlighted';
1065                                 hl_tabs.push(t);
1066                         }
1067
1068                         cbi_tag_last(c);
1069                         updated = true;
1070                 }
1071
1072         if (hl_tabs.length > 0)
1073                 window.setTimeout(function() {
1074                         for( var i = 0; i < hl_tabs.length; i++ )
1075                                 hl_tabs[i].className = hl_tabs[i].className.replace(/ cbi-tab-highlighted/g, '');
1076                 }, 750);
1077
1078         return updated;
1079 }
1080
1081
1082 function cbi_validate_form(form, errmsg)
1083 {
1084         /* if triggered by a section removal or addition, don't validate */
1085         if( form.cbi_state == 'add-section' || form.cbi_state == 'del-section' )
1086                 return true;
1087
1088         if( form.cbi_validators )
1089         {
1090                 for( var i = 0; i < form.cbi_validators.length; i++ )
1091                 {
1092                         var validator = form.cbi_validators[i];
1093                         if( !validator() && errmsg )
1094                         {
1095                                 alert(errmsg);
1096                                 return false;
1097                         }
1098                 }
1099         }
1100
1101         return true;
1102 }
1103
1104 function cbi_validate_reset(form)
1105 {
1106         window.setTimeout(
1107                 function() { cbi_validate_form(form, null) }, 100
1108         );
1109
1110         return true;
1111 }
1112
1113 function cbi_validate_compile(code)
1114 {
1115         var pos = 0;
1116         var esc = false;
1117         var depth = 0;
1118         var stack = [ ];
1119
1120         code += ',';
1121
1122         for (var i = 0; i < code.length; i++)
1123         {
1124                 if (esc)
1125                 {
1126                         esc = false;
1127                         continue;
1128                 }
1129
1130                 switch (code.charCodeAt(i))
1131                 {
1132                 case 92:
1133                         esc = true;
1134                         break;
1135
1136                 case 40:
1137                 case 44:
1138                         if (depth <= 0)
1139                         {
1140                                 if (pos < i)
1141                                 {
1142                                         var label = code.substring(pos, i);
1143                                                 label = label.replace(/\\(.)/g, '$1');
1144                                                 label = label.replace(/^[ \t]+/g, '');
1145                                                 label = label.replace(/[ \t]+$/g, '');
1146
1147                                         if (label && !isNaN(label))
1148                                         {
1149                                                 stack.push(parseFloat(label));
1150                                         }
1151                                         else if (label.match(/^(['"]).*\1$/))
1152                                         {
1153                                                 stack.push(label.replace(/^(['"])(.*)\1$/, '$2'));
1154                                         }
1155                                         else if (typeof cbi_validators[label] == 'function')
1156                                         {
1157                                                 stack.push(cbi_validators[label]);
1158                                                 stack.push(null);
1159                                         }
1160                                         else
1161                                         {
1162                                                 throw "Syntax error, unhandled token '"+label+"'";
1163                                         }
1164                                 }
1165                                 pos = i+1;
1166                         }
1167                         depth += (code.charCodeAt(i) == 40);
1168                         break;
1169
1170                 case 41:
1171                         if (--depth <= 0)
1172                         {
1173                                 if (typeof stack[stack.length-2] != 'function')
1174                                         throw "Syntax error, argument list follows non-function";
1175
1176                                 stack[stack.length-1] =
1177                                         arguments.callee(code.substring(pos, i));
1178
1179                                 pos = i+1;
1180                         }
1181                         break;
1182                 }
1183         }
1184
1185         return stack;
1186 }
1187
1188 function cbi_validate_field(cbid, optional, type)
1189 {
1190         var field = (typeof cbid == "string") ? document.getElementById(cbid) : cbid;
1191         var vstack; try { vstack = cbi_validate_compile(type); } catch(e) { };
1192
1193         if (field && vstack && typeof vstack[0] == "function")
1194         {
1195                 var validator = function()
1196                 {
1197                         // is not detached
1198                         if( field.form )
1199                         {
1200                                 field.className = field.className.replace(/ cbi-input-invalid/g, '');
1201
1202                                 // validate value
1203                                 var value = (field.options && field.options.selectedIndex > -1)
1204                                         ? field.options[field.options.selectedIndex].value : field.value;
1205
1206                                 if (!(((value.length == 0) && optional) || vstack[0].apply(value, vstack[1])))
1207                                 {
1208                                         // invalid
1209                                         field.className += ' cbi-input-invalid';
1210                                         return false;
1211                                 }
1212                         }
1213
1214                         return true;
1215                 };
1216
1217                 if( ! field.form.cbi_validators )
1218                         field.form.cbi_validators = [ ];
1219
1220                 field.form.cbi_validators.push(validator);
1221
1222                 cbi_bind(field, "blur",  validator);
1223                 cbi_bind(field, "keyup", validator);
1224
1225                 if (field.nodeName == 'SELECT')
1226                 {
1227                         cbi_bind(field, "change", validator);
1228                         cbi_bind(field, "click",  validator);
1229                 }
1230
1231                 field.setAttribute("cbi_validate", validator);
1232                 field.setAttribute("cbi_datatype", type);
1233                 field.setAttribute("cbi_optional", (!!optional).toString());
1234
1235                 validator();
1236
1237                 var fcbox = document.getElementById('cbi.combobox.' + field.id);
1238                 if (fcbox)
1239                         cbi_validate_field(fcbox, optional, type);
1240         }
1241 }
1242
1243 function cbi_row_swap(elem, up, store)
1244 {
1245         var tr = elem.parentNode;
1246         while (tr && tr.nodeName.toLowerCase() != 'tr')
1247                 tr = tr.parentNode;
1248
1249         if (!tr)
1250                 return false;
1251
1252         var table = tr.parentNode;
1253         while (table && table.nodeName.toLowerCase() != 'table')
1254                 table = table.parentNode;
1255
1256         if (!table)
1257                 return false;
1258
1259         var s = up ? 3 : 2;
1260         var e = up ? table.rows.length : table.rows.length - 1;
1261
1262         for (var idx = s; idx < e; idx++)
1263         {
1264                 if (table.rows[idx] == tr)
1265                 {
1266                         if (up)
1267                                 tr.parentNode.insertBefore(table.rows[idx], table.rows[idx-1]);
1268                         else
1269                                 tr.parentNode.insertBefore(table.rows[idx+1], table.rows[idx]);
1270
1271                         break;
1272                 }
1273         }
1274
1275         var ids = [ ];
1276         for (idx = 2; idx < table.rows.length; idx++)
1277         {
1278                 table.rows[idx].className = table.rows[idx].className.replace(
1279                         /cbi-rowstyle-[12]/, 'cbi-rowstyle-' + (1 + (idx % 2))
1280                 );
1281
1282                 if (table.rows[idx].id && table.rows[idx].id.match(/-([^\-]+)$/) )
1283                         ids.push(RegExp.$1);
1284         }
1285
1286         var input = document.getElementById(store);
1287         if (input)
1288                 input.value = ids.join(' ');
1289
1290         return false;
1291 }
1292
1293 function cbi_tag_last(container)
1294 {
1295         var last;
1296
1297         for (var i = 0; i < container.childNodes.length; i++)
1298         {
1299                 var c = container.childNodes[i];
1300                 if (c.nodeType == 1 && c.nodeName.toLowerCase() == 'div')
1301                 {
1302                         c.className = c.className.replace(/ cbi-value-last$/, '');
1303                         last = c;
1304                 }
1305         }
1306
1307         if (last)
1308         {
1309                 last.className += ' cbi-value-last';
1310         }
1311 }
1312
1313 String.prototype.serialize = function()
1314 {
1315         var o = this;
1316         switch(typeof(o))
1317         {
1318                 case 'object':
1319                         // null
1320                         if( o == null )
1321                         {
1322                                 return 'null';
1323                         }
1324
1325                         // array
1326                         else if( o.length )
1327                         {
1328                                 var i, s = '';
1329
1330                                 for( var i = 0; i < o.length; i++ )
1331                                         s += (s ? ', ' : '') + String.serialize(o[i]);
1332
1333                                 return '[ ' + s + ' ]';
1334                         }
1335
1336                         // object
1337                         else
1338                         {
1339                                 var k, s = '';
1340
1341                                 for( k in o )
1342                                         s += (s ? ', ' : '') + k + ': ' + String.serialize(o[k]);
1343
1344                                 return '{ ' + s + ' }';
1345                         }
1346
1347                         break;
1348
1349                 case 'string':
1350                         // complex string
1351                         if( o.match(/[^a-zA-Z0-9_,.: -]/) )
1352                                 return 'decodeURIComponent("' + encodeURIComponent(o) + '")';
1353
1354                         // simple string
1355                         else
1356                                 return '"' + o + '"';
1357
1358                         break;
1359
1360                 default:
1361                         return o.toString();
1362         }
1363 }
1364
1365 String.prototype.format = function()
1366 {
1367         if (!RegExp)
1368                 return;
1369
1370         var html_esc = [/&/g, '&#38;', /"/g, '&#34;', /'/g, '&#39;', /</g, '&#60;', />/g, '&#62;'];
1371         var quot_esc = [/"/g, '&#34;', /'/g, '&#39;'];
1372
1373         function esc(s, r) {
1374                 if (typeof(s) !== 'string' && !(s instanceof String))
1375                         return '';
1376
1377                 for( var i = 0; i < r.length; i += 2 )
1378                         s = s.replace(r[i], r[i+1]);
1379                 return s;
1380         }
1381
1382         var str = this;
1383         var out = '';
1384         var re = /^(([^%]*)%('.|0|\x20)?(-)?(\d+)?(\.\d+)?(%|b|c|d|u|f|o|s|x|X|q|h|j|t|m))/;
1385         var a = b = [], numSubstitutions = 0, numMatches = 0;
1386
1387         while (a = re.exec(str))
1388         {
1389                 var m = a[1];
1390                 var leftpart = a[2], pPad = a[3], pJustify = a[4], pMinLength = a[5];
1391                 var pPrecision = a[6], pType = a[7];
1392
1393                 numMatches++;
1394
1395                 if (pType == '%')
1396                 {
1397                         subst = '%';
1398                 }
1399                 else
1400                 {
1401                         if (numSubstitutions < arguments.length)
1402                         {
1403                                 var param = arguments[numSubstitutions++];
1404
1405                                 var pad = '';
1406                                 if (pPad && pPad.substr(0,1) == "'")
1407                                         pad = leftpart.substr(1,1);
1408                                 else if (pPad)
1409                                         pad = pPad;
1410                                 else
1411                                         pad = ' ';
1412
1413                                 var justifyRight = true;
1414                                 if (pJustify && pJustify === "-")
1415                                         justifyRight = false;
1416
1417                                 var minLength = -1;
1418                                 if (pMinLength)
1419                                         minLength = +pMinLength;
1420
1421                                 var precision = -1;
1422                                 if (pPrecision && pType == 'f')
1423                                         precision = +pPrecision.substring(1);
1424
1425                                 var subst = param;
1426
1427                                 switch(pType)
1428                                 {
1429                                         case 'b':
1430                                                 subst = (+param || 0).toString(2);
1431                                                 break;
1432
1433                                         case 'c':
1434                                                 subst = String.fromCharCode(+param || 0);
1435                                                 break;
1436
1437                                         case 'd':
1438                                                 subst = ~~(+param || 0);
1439                                                 break;
1440
1441                                         case 'u':
1442                                                 subst = ~~Math.abs(+param || 0);
1443                                                 break;
1444
1445                                         case 'f':
1446                                                 subst = (precision > -1)
1447                                                         ? ((+param || 0.0)).toFixed(precision)
1448                                                         : (+param || 0.0);
1449                                                 break;
1450
1451                                         case 'o':
1452                                                 subst = (+param || 0).toString(8);
1453                                                 break;
1454
1455                                         case 's':
1456                                                 subst = param;
1457                                                 break;
1458
1459                                         case 'x':
1460                                                 subst = ('' + (+param || 0).toString(16)).toLowerCase();
1461                                                 break;
1462
1463                                         case 'X':
1464                                                 subst = ('' + (+param || 0).toString(16)).toUpperCase();
1465                                                 break;
1466
1467                                         case 'h':
1468                                                 subst = esc(param, html_esc);
1469                                                 break;
1470
1471                                         case 'q':
1472                                                 subst = esc(param, quot_esc);
1473                                                 break;
1474
1475                                         case 'j':
1476                                                 subst = String.serialize(param);
1477                                                 break;
1478
1479                                         case 't':
1480                                                 var td = 0;
1481                                                 var th = 0;
1482                                                 var tm = 0;
1483                                                 var ts = (param || 0);
1484
1485                                                 if (ts > 60) {
1486                                                         tm = Math.floor(ts / 60);
1487                                                         ts = (ts % 60);
1488                                                 }
1489
1490                                                 if (tm > 60) {
1491                                                         th = Math.floor(tm / 60);
1492                                                         tm = (tm % 60);
1493                                                 }
1494
1495                                                 if (th > 24) {
1496                                                         td = Math.floor(th / 24);
1497                                                         th = (th % 24);
1498                                                 }
1499
1500                                                 subst = (td > 0)
1501                                                         ? String.format('%dd %dh %dm %ds', td, th, tm, ts)
1502                                                         : String.format('%dh %dm %ds', th, tm, ts);
1503
1504                                                 break;
1505
1506                                         case 'm':
1507                                                 var mf = pMinLength ? +pMinLength : 1000;
1508                                                 var pr = pPrecision ? ~~(10 * +('0' + pPrecision)) : 2;
1509
1510                                                 var i = 0;
1511                                                 var val = (+param || 0);
1512                                                 var units = [ ' ', ' K', ' M', ' G', ' T', ' P', ' E' ];
1513
1514                                                 for (i = 0; (i < units.length) && (val > mf); i++)
1515                                                         val /= mf;
1516
1517                                                 subst = (i ? val.toFixed(pr) : val) + units[i];
1518                                                 pMinLength = null;
1519                                                 break;
1520                                 }
1521                         }
1522                 }
1523
1524                 if (pMinLength) {
1525                         subst = subst.toString();
1526                         for (var i = subst.length; i < pMinLength; i++)
1527                                 if (pJustify == '-')
1528                                         subst = subst + ' ';
1529                                 else
1530                                         subst = pad + subst;
1531                 }
1532
1533                 out += leftpart + subst;
1534                 str = str.substr(m.length);
1535         }
1536
1537         return out + str;
1538 }
1539
1540 String.prototype.nobr = function()
1541 {
1542         return this.replace(/[\s\n]+/g, '&#160;');
1543 }
1544
1545 String.serialize = function()
1546 {
1547         var a = [ ];
1548         for (var i = 1; i < arguments.length; i++)
1549                 a.push(arguments[i]);
1550         return ''.serialize.apply(arguments[0], a);
1551 }
1552
1553 String.format = function()
1554 {
1555         var a = [ ];
1556         for (var i = 1; i < arguments.length; i++)
1557                 a.push(arguments[i]);
1558         return ''.format.apply(arguments[0], a);
1559 }
1560
1561 String.nobr = function()
1562 {
1563         var a = [ ];
1564         for (var i = 1; i < arguments.length; i++)
1565                 a.push(arguments[i]);
1566         return ''.nobr.apply(arguments[0], a);
1567 }