From 143ceff0d83c53000dd29c2047d204c08dba9de7 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Thu, 06 Mar 2014 07:17:31 -0500
Subject: [PATCH] Implement ArrayAccess interface for conveniently accessing rcube_result_set as array

---
 program/js/common.js |  545 +++++++++++++++++++++++++++++++++---------------------
 1 files changed, 330 insertions(+), 215 deletions(-)

diff --git a/program/js/common.js b/program/js/common.js
index d23a133..722eb3f 100644
--- a/program/js/common.js
+++ b/program/js/common.js
@@ -1,16 +1,17 @@
 /*
  +-----------------------------------------------------------------------+
- | RoundCube common js library                                           |
+ | Roundcube common js library                                           |
  |                                                                       |
- | This file is part of the RoundCube web development suite              |
- | Copyright (C) 2005-2007, RoundCube Dev, - Switzerland                 |
- | Licensed under the GNU GPL                                            |
+ | This file is part of the Roundcube web development suite              |
+ | Copyright (C) 2005-2012, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  |                                                                       |
  +-----------------------------------------------------------------------+
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  +-----------------------------------------------------------------------+
- 
- $Id$
 */
 
 // Constants
@@ -25,70 +26,111 @@
  */
 function roundcube_browser()
 {
-  this.ver = parseFloat(navigator.appVersion);
-  this.appver = navigator.appVersion;
-  this.agent = navigator.userAgent;
-  this.name = navigator.appName;
-  this.vendor = navigator.vendor ? navigator.vendor : '';
-  this.vendver = navigator.vendorSub ? parseFloat(navigator.vendorSub) : 0;
-  this.product = navigator.product ? navigator.product : '';
-  this.platform = String(navigator.platform).toLowerCase();
-  this.lang = (navigator.language) ? navigator.language.substring(0,2) :
-              (navigator.browserLanguage) ? navigator.browserLanguage.substring(0,2) :
-              (navigator.systemLanguage) ? navigator.systemLanguage.substring(0,2) : 'en';
+  var n = navigator;
 
-  this.win = (this.platform.indexOf('win')>=0) ? true : false;
-  this.mac = (this.platform.indexOf('mac')>=0) ? true : false;
-  this.linux = (this.platform.indexOf('linux')>=0) ? true : false;
-  this.unix = (this.platform.indexOf('unix')>=0) ? true : false;
+  this.ver = parseFloat(n.appVersion);
+  this.appver = n.appVersion;
+  this.agent = n.userAgent;
+  this.agent_lc = n.userAgent.toLowerCase();
+  this.name = n.appName;
+  this.vendor = n.vendor ? n.vendor : '';
+  this.vendver = n.vendorSub ? parseFloat(n.vendorSub) : 0;
+  this.product = n.product ? n.product : '';
+  this.platform = String(n.platform).toLowerCase();
+  this.lang = n.language ? n.language.substring(0,2) :
+              n.browserLanguage ? n.browserLanguage.substring(0,2) :
+              n.systemLanguage ? n.systemLanguage.substring(0,2) : 'en';
+
+  this.win = this.platform.indexOf('win') >= 0;
+  this.mac = this.platform.indexOf('mac') >= 0;
+  this.linux = this.platform.indexOf('linux') >= 0;
+  this.unix = this.platform.indexOf('unix') >= 0;
 
   this.dom = document.getElementById ? true : false;
-  this.dom2 = (document.addEventListener && document.removeEventListener);
+  this.dom2 = document.addEventListener && document.removeEventListener;
 
-  this.ie = (document.all) ? true : false;
-  this.ie4 = (this.ie && !this.dom);
-  this.ie5 = (this.dom && this.appver.indexOf('MSIE 5')>0);
-  this.ie8 = (this.dom && this.appver.indexOf('MSIE 8')>0);
-  this.ie7 = (this.dom && this.appver.indexOf('MSIE 7')>0);
-  this.ie6 = (this.dom && !this.ie8 && !this.ie7 && this.appver.indexOf('MSIE 6')>0);
+  this.webkit = this.agent_lc.indexOf('applewebkit') > 0;
+  this.ie = (document.all && !window.opera) || (this.win && this.agent_lc.indexOf('trident/') > 0);
 
-  this.mz = (this.dom && this.ver>=5);  // (this.dom && this.product=='Gecko')
-  this.ns = ((this.ver<5 && this.name=='Netscape') || (this.ver>=5 && this.vendor.indexOf('Netscape')>=0));
-  this.ns6 = (this.ns && parseInt(this.vendver)==6);  // (this.mz && this.ns) ? true : false;
-  this.ns7 = (this.ns && parseInt(this.vendver)==7);  // this.agent.indexOf('Netscape/7')>0);
-  this.safari = (this.agent.toLowerCase().indexOf('safari')>0 || this.agent.toLowerCase().indexOf('applewebkit')>0);
-  this.konq   = (this.agent.toLowerCase().indexOf('konqueror')>0);
+  if (this.ie) {
+    this.ie6 = this.appver.indexOf('MSIE 6') > 0;
+    this.ie7 = this.appver.indexOf('MSIE 7') > 0;
+    this.ie8 = this.appver.indexOf('MSIE 8') > 0;
+    this.ie9 = this.appver.indexOf('MSIE 9') > 0;
+  }
+  else if (window.opera) {
+    this.opera = true;
+    this.vendver = opera.version();
+  }
+  else {
+    this.chrome = this.agent_lc.indexOf('chrome') > 0;
+    this.safari = !this.chrome && (this.webkit || this.agent_lc.indexOf('safari') > 0);
+    this.konq = this.agent_lc.indexOf('konqueror') > 0;
+    this.mz = this.dom && !this.chrome && !this.safari && !this.konq && this.agent.indexOf('Mozilla') >= 0;
+    this.iphone = this.safari && (this.agent_lc.indexOf('iphone') > 0 || this.agent_lc.indexOf('ipod') > 0);
+    this.ipad = this.safari && this.agent_lc.indexOf('ipad') > 0;
+  }
 
-  this.opera = (window.opera) ? true : false;
+  if (!this.vendver) {
+    // common version strings
+    this.vendver = /(opera|opr|khtml|chrome|safari|applewebkit|msie)(\s|\/)([0-9\.]+)/.test(this.agent_lc) ? parseFloat(RegExp.$3) : 0;
 
-  if(this.opera && window.RegExp)
-    this.vendver = (/opera(\s|\/)([0-9\.]+)/i.test(navigator.userAgent)) ? parseFloat(RegExp.$2) : -1;
-  else if(!this.vendver && this.safari)
-    this.vendver = (/(safari|applewebkit)\/([0-9]+)/i.test(this.agent)) ? parseInt(RegExp.$2) : 0;
-  else if((!this.vendver && this.mz) || this.agent.indexOf('Camino')>0)
-    this.vendver = (/rv:([0-9\.]+)/.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
-  else if(this.ie && window.RegExp)
-    this.vendver = (/msie\s+([0-9\.]+)/i.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
-  else if(this.konq && window.RegExp)
-    this.vendver = (/khtml\/([0-9\.]+)/i.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
+    // any other (Mozilla, Camino, IE>=11)
+    if (!this.vendver)
+      this.vendver = /rv:([0-9\.]+)/.test(this.agent) ? parseFloat(RegExp.$1) : 0;
+  }
 
   // get real language out of safari's user agent
-  if(this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/i.test(this.agent)))
+  if (this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/.test(this.agent_lc)))
     this.lang = RegExp.$1;
 
-  this.dhtml = ((this.ie4 && this.win) || this.ie5 || this.ie6 || this.ns4 || this.mz);
-  this.vml = (this.win && this.ie && this.dom && !this.opera);
-  this.pngalpha = (this.mz || (this.opera && this.vendver>=6) || (this.ie && this.mac && this.vendver>=5) ||
-                   (this.ie && this.win && this.vendver>=5.5) || this.safari);
-  this.opacity = (this.mz || (this.ie && this.vendver>=5.5 && !this.opera) || (this.safari && this.vendver>=100));
-  this.cookies = navigator.cookieEnabled;
-  
+  this.tablet = /ipad|android|xoom|sch-i800|playbook|tablet|kindle/i.test(this.agent_lc);
+  this.mobile = /iphone|ipod|blackberry|iemobile|opera mini|opera mobi|mobile/i.test(this.agent_lc);
+  this.touch = this.mobile || this.tablet;
+  this.cookies = n.cookieEnabled;
+
   // test for XMLHTTP support
-  this.xmlhttp_test = function() {
+  this.xmlhttp_test = function()
+  {
     var activeX_test = new Function("try{var o=new ActiveXObject('Microsoft.XMLHTTP');return true;}catch(err){return false;}");
-    this.xmlhttp = (window.XMLHttpRequest || (window.ActiveXObject && activeX_test())) ? true : false;
+    this.xmlhttp = (window.XMLHttpRequest || (window.ActiveXObject && activeX_test()));
     return this.xmlhttp;
-  }
+  };
+
+  // set class names to html tag according to the current user agent detection
+  // this allows browser-specific css selectors like "html.chrome .someclass"
+  this.set_html_class = function()
+  {
+    var classname = ' js';
+
+    if (this.ie)
+      classname += ' ie ie'+parseInt(this.vendver);
+    else if (this.opera)
+      classname += ' opera';
+    else if (this.konq)
+      classname += ' konqueror';
+    else if (this.safari)
+      classname += ' chrome';
+    else if (this.chrome)
+      classname += ' chrome';
+    else if (this.mz)
+      classname += ' mozilla';
+
+    if (this.iphone)
+      classname += ' iphone';
+    else if (this.ipad)
+      classname += ' ipad';
+    else if (this.webkit)
+      classname += ' webkit';
+
+    if (this.mobile)
+      classname += ' mobile';
+    if (this.tablet)
+      classname += ' tablet';
+
+    if (document.documentElement)
+      document.documentElement.className += classname;
+  };
 };
 
 
@@ -119,7 +161,7 @@
 get_button: function(e)
 {
   e = e || window.event;
-  return e && (typeof e.button != 'undefined') ? e.button : (e && e.which ? e.which : 0);
+  return e && e.button !== undefined ? e.button : (e && e.which ? e.which : 0);
 },
 
 /**
@@ -130,14 +172,12 @@
   var opcode = 0;
   e = e || window.event;
 
-  if (bw.mac && e) {
+  if (bw.mac && e)
     opcode += (e.metaKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
-    return opcode;    
-  }
-  if (e) {
+  else if (e)
     opcode += (e.ctrlKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
-    return opcode;
-  }
+
+  return opcode;
 },
 
 /**
@@ -146,7 +186,6 @@
 get_mouse_pos: function(e)
 {
   if (!e) e = window.event;
-
   var mX = (e.pageX) ? e.pageX : e.clientX,
     mY = (e.pageY) ? e.pageY : e.clientY;
 
@@ -175,7 +214,7 @@
 
   if (!p.object._rc_events)
     p.object._rc_events = [];
-  
+
   var key = p.event + '*' + p.method;
   if (!p.object._rc_events[key])
     p.object._rc_events[key] = function(e){ return p.object[p.method](e); };
@@ -212,7 +251,7 @@
 },
 
 /**
- * Prevent event propagation and bubbeling
+ * Prevent event propagation and bubbling
  */
 cancel: function(evt)
 {
@@ -225,6 +264,11 @@
   e.cancelBubble = true;
   e.returnValue = false;
   return false;
+},
+
+touchevent: function(e)
+{
+  return { pageX:e.pageX, pageY:e.pageY, offsetX:e.pageX - e.target.offsetLeft, offsetY:e.pageY - e.target.offsetTop, target:e.target, istouch:true };
 }
 
 };
@@ -245,7 +289,6 @@
  *
  * @param {String}   Event name
  * @param {Function} Handler function
- * @return Listener ID (used to remove this handler later on)
  */
 addEventListener: function(evt, func, obj)
 {
@@ -253,9 +296,10 @@
     this._events = {};
   if (!this._events[evt])
     this._events[evt] = [];
-    
-  var e = {func:func, obj:obj ? obj : window};
-  this._events[evt][this._events[evt].length] = e;
+
+  this._events[evt].push({func:func, obj:obj ? obj : window});
+
+  return this; // chainable
 },
 
 /**
@@ -266,9 +310,9 @@
  */
 removeEventListener: function(evt, func, obj)
 {
-  if (typeof obj == 'undefined')
+  if (obj === undefined)
     obj = window;
-    
+
   for (var h,i=0; this._events && this._events[evt] && i < this._events[evt].length; i++)
     if ((h = this._events[evt][i]) && h.func == func && h.obj == obj)
       this._events[evt][i] = null;
@@ -283,146 +327,49 @@
 triggerEvent: function(evt, e)
 {
   var ret, h;
-  if (typeof e == 'undefined')
+  if (e === undefined)
     e = this;
-  else if (typeof e == 'object')
+  else if (typeof e === 'object')
     e.event = evt;
 
   if (this._events && this._events[evt] && !this._event_exec) {
     this._event_exec = true;
     for (var i=0; i < this._events[evt].length; i++) {
       if ((h = this._events[evt][i])) {
-        if (typeof h.func == 'function')
+        if (typeof h.func === 'function')
           ret = h.func.call ? h.func.call(h.obj, e) : h.func(e);
-        else if (typeof h.obj[h.func] == 'function')
+        else if (typeof h.obj[h.func] === 'function')
           ret = h.obj[h.func](e);
-              
+
         // cancel event execution
-        if (typeof ret != 'undefined' && !ret)
+        if (ret !== undefined && !ret)
           break;
+      }
+    }
+    if (ret && ret.event) {
+      try {
+        delete ret.event;
+      } catch (err) {
+        // IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
+        $(ret).removeAttr('event');
       }
     }
   }
 
   this._event_exec = false;
+  if (e.event) {
+    try {
+      delete e.event;
+    } catch (err) {
+      // IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
+      $(e).removeAttr('event');
+    }
+  }
+
   return ret;
 }
 
 };  // end rcube_event_engine.prototype
-
-
-
-/**
- * RoundCube generic layer (floating box) class
- *
- * @constructor
- */
-function rcube_layer(id, attributes)
-{
-  this.name = id;
-  
-  // create a new layer in the current document
-  this.create = function(arg)
-  {
-    var l = (arg.x) ? arg.x : 0,
-      t = (arg.y) ? arg.y : 0,
-      w = arg.width,
-      h = arg.height,
-      z = arg.zindex,
-      vis = arg.vis,
-      parent = arg.parent,
-      obj = document.createElement('DIV');
-
-    with (obj) {
-      id = this.name;
-      with (style) {
-	    position = 'absolute';
-        visibility = (vis) ? (vis==2) ? 'inherit' : 'visible' : 'hidden';
-        left = l+'px';
-        top = t+'px';
-        if (w)
-	      width = w.toString().match(/\%$/) ? w : w+'px';
-        if (h)
-	      height = h.toString().match(/\%$/) ? h : h+'px';
-        if(z) zIndex = z;
-	  }
-    }
-
-    if (parent)
-      parent.appendChild(obj);
-    else
-      document.body.appendChild(obj);
-
-    this.elm = obj;
-  };
-
-  // create new layer
-  if(attributes != null) {
-    this.create(attributes);
-    this.name = this.elm.id;
-  }
-  else  // just refer to the object
-    this.elm = document.getElementById(id);
-
-  if(!this.elm)
-    return false;
-
-
-  // ********* layer object properties *********
-
-  this.css = this.elm.style;
-  this.event = this.elm;
-  this.width = this.elm.offsetWidth;
-  this.height = this.elm.offsetHeight;
-  this.x = parseInt(this.elm.offsetLeft);
-  this.y = parseInt(this.elm.offsetTop);
-  this.visible = (this.css.visibility=='visible' || this.css.visibility=='show' || this.css.visibility=='inherit') ? true : false;
-
-
-  // ********* layer object methods *********
-
-  // move the layer to a specific position
-  this.move = function(x, y)
-  {
-    this.x = x;
-    this.y = y;
-    this.css.left = Math.round(this.x)+'px';
-    this.css.top = Math.round(this.y)+'px';
-  };
-
-  // change the layers width and height
-  this.resize = function(w,h)
-  {
-    this.css.width  = w+'px';
-    this.css.height = h+'px';
-    this.width = w;
-    this.height = h;
-  };
-
-  // show or hide the layer
-  this.show = function(a)
-  {
-    if(a == 1) {
-      this.css.visibility = 'visible';
-      this.visible = true;
-    }
-    else if(a == 2) {
-      this.css.visibility = 'inherit';
-      this.visible = true;
-    }
-    else {
-      this.css.visibility = 'hidden';
-      this.visible = false;
-    }
-  };
-
-  // write new content into a Layer
-  this.write = function(cont)
-  {
-    this.elm.innerHTML = cont;
-  };
-
-};
 
 
 // check if input is a valid email address
@@ -435,41 +382,69 @@
       dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]',
       atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+',
       quoted_pair = '\\x5c[\\x00-\\x7f]',
-      domain_literal = '\\x5b('+dtext+'|'+quoted_pair+')*\\x5d',
       quoted_string = '\\x22('+qtext+'|'+quoted_pair+')*\\x22',
-      sub_domain = '('+atom+'|'+domain_literal+')',
+      ipv4 = '\\[(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\\]',
+      ipv6 = '\\[IPv6:[0-9a-f:.]+\\]',
+      ip_addr = '(' + ipv4 + ')|(' + ipv6 + ')',
+      // Use simplified domain matching, because we need to allow Unicode characters here
+      // So, e-mail address should be validated also on server side after idn_to_ascii() use
+      //domain_literal = '\\x5b('+dtext+'|'+quoted_pair+')*\\x5d',
+      //sub_domain = '('+atom+'|'+domain_literal+')',
+      // allow punycode/unicode top-level domain
+      domain = '(('+ip_addr+')|(([^@\\x2e]+\\x2e)+([^\\x00-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}|xn--[a-z0-9]{2,})))',
+      // ICANN e-mail test (http://idn.icann.org/E-mail_test)
+      icann_domains = [
+        '\\u0645\\u062b\\u0627\\u0644\\x2e\\u0625\\u062e\\u062a\\u0628\\u0627\\u0631',
+        '\\u4f8b\\u5b50\\x2e\\u6d4b\\u8bd5',
+        '\\u4f8b\\u5b50\\x2e\\u6e2c\\u8a66',
+        '\\u03c0\\u03b1\\u03c1\\u03ac\\u03b4\\u03b5\\u03b9\\u03b3\\u03bc\\u03b1\\x2e\\u03b4\\u03bf\\u03ba\\u03b9\\u03bc\\u03ae',
+        '\\u0909\\u0926\\u093e\\u0939\\u0930\\u0923\\x2e\\u092a\\u0930\\u0940\\u0915\\u094d\\u0937\\u093e',
+        '\\u4f8b\\u3048\\x2e\\u30c6\\u30b9\\u30c8',
+        '\\uc2e4\\ub840\\x2e\\ud14c\\uc2a4\\ud2b8',
+        '\\u0645\\u062b\\u0627\\u0644\\x2e\\u0622\\u0632\\u0645\\u0627\\u06cc\\u0634\u06cc',
+        '\\u043f\\u0440\\u0438\\u043c\\u0435\\u0440\\x2e\\u0438\\u0441\\u043f\\u044b\\u0442\\u0430\\u043d\\u0438\\u0435',
+        '\\u0b89\\u0ba4\\u0bbe\\u0bb0\\u0ba3\\u0bae\\u0bcd\\x2e\\u0baa\\u0bb0\\u0bbf\\u0b9f\\u0bcd\\u0b9a\\u0bc8',
+        '\\u05d1\\u05f2\\u05b7\\u05e9\\u05e4\\u05bc\\u05d9\\u05dc\\x2e\\u05d8\\u05e2\\u05e1\\u05d8'
+      ],
+      icann_addr = 'mailtest\\x40('+icann_domains.join('|')+')',
       word = '('+atom+'|'+quoted_string+')',
-      domain = sub_domain+'(\\x2e'+sub_domain+')*',
-      local_part = word+'(\\x2e'+word+')*',
-      addr_spec = local_part+'\\x40'+domain,
       delim = '[,;\s\n]',
+      local_part = word+'(\\x2e'+word+')*',
+      addr_spec = '(('+local_part+'\\x40'+domain+')|('+icann_addr+'))',
       reg1 = inline ? new RegExp('(^|<|'+delim+')'+addr_spec+'($|>|'+delim+')', 'i') : new RegExp('^'+addr_spec+'$', 'i');
 
     return reg1.test(input) ? true : false;
   }
+
   return false;
 };
-
 
 // recursively copy an object
 function rcube_clone_object(obj)
 {
   var out = {};
-  
+
   for (var key in obj) {
-    if (obj[key] && typeof obj[key] == 'object')
-      out[key] = clone_object(obj[key]);
+    if (obj[key] && typeof obj[key] === 'object')
+      out[key] = rcube_clone_object(obj[key]);
     else
       out[key] = obj[key];
   }
-  
+
   return out;
 };
 
-// make a string URL safe
+// make a string URL safe (and compatible with PHP's rawurlencode())
 function urlencode(str)
 {
-  return window.encodeURIComponent ? encodeURIComponent(str) : escape(str);
+  if (window.encodeURIComponent)
+    return encodeURIComponent(str).replace('*', '%2A');
+
+  return escape(str)
+    .replace('+', '%2B')
+    .replace('*', '%2A')
+    .replace('/', '%2F')
+    .replace('@', '%40');
 };
 
 
@@ -533,23 +508,25 @@
 {
   var dc = document.cookie,
     prefix = name + "=",
-    end, begin = dc.indexOf("; " + prefix);
+    begin = dc.indexOf("; " + prefix);
 
   if (begin == -1) {
     begin = dc.indexOf(prefix);
     if (begin != 0)
       return null;
   }
-  else
-    begin += 2;  
+  else {
+    begin += 2;
+  }
 
-  end = document.cookie.indexOf(";", begin);
+  var end = dc.indexOf(";", begin);
   if (end == -1)
     end = dc.length;
 
   return unescape(dc.substring(begin + prefix.length, end));
 };
 
+// deprecated aliases, to be removed, use rcmail.set_cookie/rcmail.get_cookie
 roundcube_browser.prototype.set_cookie = setCookie;
 roundcube_browser.prototype.get_cookie = getCookie;
 
@@ -566,7 +543,7 @@
       else
         msg += '\n--------------------------------------\n';
 
-      // Konqueror doesn't allows to just change value of hidden element
+      // Konqueror doesn't allow to just change the value of hidden element
       if (bw.konq) {
         box.innerText += msg;
         box.value = box.innerText;
@@ -584,8 +561,7 @@
 };
 
 var bw = new roundcube_browser();
-if (!window.console) 
-  console = new rcube_console();
+bw.set_html_class();
 
 
 // Add escape() method to RegExp object
@@ -595,13 +571,36 @@
   return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
 };
 
+// Extend Date prototype to detect Standard timezone without DST
+// from http://www.michaelapproved.com/articles/timezone-detect-and-ignore-daylight-saving-time-dst/
+Date.prototype.getStdTimezoneOffset = function()
+{
+  var m = 12,
+    d = new Date(null, m, 1),
+    tzo = d.getTimezoneOffset();
+
+    while (--m) {
+      d.setUTCMonth(m);
+      if (tzo != d.getTimezoneOffset()) {
+        return Math.max(tzo, d.getTimezoneOffset());
+    }
+  }
+
+  return tzo;
+}
+
+// define String's startsWith() method for old browsers
+if (!String.prototype.startsWith) {
+  String.prototype.startsWith = function(search, position) {
+    position = position || 0;
+    return this.slice(position, search.length) === search;
+  };
+}
 
 // Make getElementById() case-sensitive on IE
-if (bw.ie)
-{
+if (bw.ie) {
   document._getElementById = document.getElementById;
-  document.getElementById = function(id)
-  {
+  document.getElementById = function(id) {
     var i = 0, obj = document._getElementById(id);
 
     if (obj && obj.id != id)
@@ -610,4 +609,120 @@
 
     return obj;
   }
+}
+
+// jQuery plugin to emulate HTML5 placeholder attributes on input elements
+jQuery.fn.placeholder = function(text) {
+  return this.each(function() {
+    var active = false, elem = $(this);
+    this.title = text;
+
+    // Try HTML5 placeholder attribute first
+    if ('placeholder' in this) {
+      elem.attr('placeholder', text);
+    }
+    // Fallback to Javascript emulation of placeholder
+    else {
+      this._placeholder = text;
+      elem.blur(function(e) {
+        if ($.trim(elem.val()) == "")
+          elem.val(text);
+        elem.triggerHandler('change');
+      })
+      .focus(function(e) {
+        if ($.trim(elem.val()) == text)
+          elem.val("");
+        elem.triggerHandler('change');
+      })
+      .change(function(e) {
+        var active = elem.val() == text;
+        elem[(active ? 'addClass' : 'removeClass')]('placeholder').attr('spellcheck', active);
+      });
+
+      // Do not blur currently focused element (catch exception: #1489008)
+      try { active = this == document.activeElement; } catch(e) {}
+      if (!active)
+        elem.blur();
+    }
+  });
 };
+
+
+// This code was written by Tyler Akins and has been placed in the
+// public domain.  It would be nice if you left this header intact.
+// Base64 code from Tyler Akins -- http://rumkin.com
+var Base64 = (function () {
+  var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+
+  var obj = {
+    /**
+     * Encodes a string in base64
+     * @param {String} input The string to encode in base64.
+     */
+    encode: function (input) {
+      if (typeof(window.btoa) === 'function')
+        return btoa(input);
+
+      var chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0, output = '', len = input.length;
+
+      do {
+        chr1 = input.charCodeAt(i++);
+        chr2 = input.charCodeAt(i++);
+        chr3 = input.charCodeAt(i++);
+
+        enc1 = chr1 >> 2;
+        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+        enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+        enc4 = chr3 & 63;
+
+        if (isNaN(chr2))
+          enc3 = enc4 = 64;
+        else if (isNaN(chr3))
+          enc4 = 64;
+
+        output = output
+          + keyStr.charAt(enc1) + keyStr.charAt(enc2)
+          + keyStr.charAt(enc3) + keyStr.charAt(enc4);
+      } while (i < len);
+
+      return output;
+    },
+
+    /**
+     * Decodes a base64 string.
+     * @param {String} input The string to decode.
+     */
+    decode: function (input) {
+      if (typeof(window.atob) === 'function')
+         return atob(input);
+
+      var chr1, chr2, chr3, enc1, enc2, enc3, enc4, len, i = 0, output = '';
+
+      // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
+      input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+      len = input.length;
+
+      do {
+        enc1 = keyStr.indexOf(input.charAt(i++));
+        enc2 = keyStr.indexOf(input.charAt(i++));
+        enc3 = keyStr.indexOf(input.charAt(i++));
+        enc4 = keyStr.indexOf(input.charAt(i++));
+
+        chr1 = (enc1 << 2) | (enc2 >> 4);
+        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+        chr3 = ((enc3 & 3) << 6) | enc4;
+
+        output = output + String.fromCharCode(chr1);
+
+        if (enc3 != 64)
+          output = output + String.fromCharCode(chr2);
+        if (enc4 != 64)
+          output = output + String.fromCharCode(chr3);
+      } while (i < len);
+
+      return output;
+    }
+  };
+
+  return obj;
+})();

--
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