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diff --git a/program/js/common.js b/program/js/common.js
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+/*
+ +-----------------------------------------------------------------------+
+ | RoundCube common js library                                           |
+ |                                                                       |
+ | This file is part of the RoundCube web development suite              |
+ | Copyright (C) 2005, RoundCube Dev, - Switzerland                      |
+ | All rights reserved.                                                  |
+ |                                                                       |
+ | Modified: 19.08.2005 (tbr)                                            |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ +-----------------------------------------------------------------------+
+*/
+
+
+// default browsercheck
+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';
+
+  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.dom = document.getElementById ? true : false;
+  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.ie6 = (this.dom && this.appver.indexOf('MSIE 6')>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.ns4 = (this.ns && parseInt(this.ver)==4);
+  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.konq   = (this.agent.toLowerCase().indexOf('konqueror')>0); 
+
+  this.opera = (window.opera) ? true : false;
+  this.opera5 = (this.opera5 && this.agent.indexOf('Opera 5')>0) ? true : false;
+  this.opera6 = (this.opera && this.agent.indexOf('Opera 6')>0) ? true : false;
+  this.opera7 = (this.opera && this.agent.indexOf('Opera 7')>0) ? true : false;
+
+  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\/([0-9]+)/i.test(this.agent)) ? parseInt(RegExp.$1) : 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;
+
+  // get real language out of safari's user agent
+  if(this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/i.test(this.agent)))
+    this.lang = RegExp.$1;
+
+  this.dhtml = ((this.ie4 && this.win) || this.ie5 || this.ie6 || this.ns4 || this.mz);
+  this.layers = this.ns4;  // (document.layers);
+  this.div = (this.ie4 || this.dom);
+  this.vml = (this.win && this.ie && this.dom && !this.opera);
+  this.linkborder = (this.ie || this.mz);
+  this.rollover = (this.ver>=4 || (this.ns && this.ver>=3));  // (document.images) ? true : false;
+  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;
+  }
+
+
+
+
+var rcube_layer_objects = new Array();
+
+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;
+    var t = (arg.y) ? arg.y : 0;
+    var w = arg.width;
+    var h = arg.height;
+    var z = arg.zindex;
+    var vis = arg.vis;
+    var parent = arg.parent;
+    var obj;
+
+    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+'px';
+        if(h) height = 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;
+
+  this.id = rcube_layer_objects.length;
+  this.obj = 'rcube_layer_objects['+this.id+']';
+  rcube_layer_objects[this.id] = this;
+
+
+  // ********* 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';
+    }
+
+
+  // move the layer for a specific step
+  this.shift = function(x,y)
+    {
+    x = Math.round(x*100)/100;
+    y = Math.round(y*100)/100;
+    this.move(this.x+x, this.y+y);
+    }
+
+
+  // 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;
+    }
+
+
+  // cut the layer (top,width,height,left)
+  this.clip = function(t,w,h,l)
+    {
+    this.css.clip='rect('+t+' '+w+' '+h+' '+l+')';
+    this.clip_height = h;
+    this.clip_width = w;
+    }
+
+
+  // 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;
+    }
+
+
+  // set the given color to the layer background
+  this.set_bgcolor = function(c)
+    {
+    if(!c || c=='#')
+      c = 'transparent';
+
+    this.css.backgroundColor = c;
+    }
+
+
+  // set the opacity of a layer to the given ammount (in %)
+  this.set_opacity = function(v)
+    {
+    if(!bw.opacity)
+      return;
+
+    var op = v<=1 ? Math.round(v*100) : parseInt(v);
+
+    if(bw.ie)
+      this.css.filter = 'alpha(opacity:'+op+')';
+    else if(bw.safari)
+      {
+      this.css.opacity = op/100;
+      this.css.KhtmlOpacity = op/100;
+      }
+    else if(bw.mz)
+      this.css.MozOpacity = op/100;
+    }
+  }
+
+
+
+// find a value in a specific array and returns the index
+function find_in_array()
+  {
+  var args = find_in_array.arguments;
+  if(!args.length) return -1;
+
+  var haystack = typeof(args[0])=='object' ? args[0] : args.length>1 && typeof(args[1])=='object' ? args[1] : new Array();
+  var needle = typeof(args[0])!='object' ? args[0] : args.length>1 && typeof(args[1])!='object' ? args[1] : '';
+  var nocase = args.length==3 ? args[2] : false;
+
+  if(!haystack.length) return -1;
+
+  for(var i=0; i<haystack.length; i++)
+    if(nocase && haystack[i].toLowerCase()==needle.toLowerCase())
+      return i;
+    else if(haystack[i]==needle)
+      return i;
+
+  return -1;
+  }
+
+
+// get any type of html objects by id/name
+function rcube_find_object(id, d)
+  {
+  var n, f, obj, e;
+  if(!d) d = document;
+
+  if(d.getElementsByName && (e = d.getElementsByName(id)))
+    obj = e[0];
+  if(!obj && d.getElementById)
+    obj = d.getElementById(id);
+  if(!obj && d.all)
+    obj = d.all[id];
+
+  if(!obj && d.images.length)
+    obj = d.images[id];
+
+  if(!obj && d.forms.length)
+    for(f=0; f<d.forms.length; f++)
+      {
+      if(d.forms[f].name == id)
+        obj = d.forms[f];
+      else if(d.forms[f].elements[id])
+        obj = d.forms[f].elements[id];
+      }
+
+  if(!obj && d.layers)
+    {
+    if(d.layers[id]) obj = d.layers[id];
+    for(n=0; !obj && n<d.layers.length; n++)
+      obj = nex_get_object(id, d.layers[n].document);
+    }
+
+  return obj;
+  }
+
+
+// return the absolute position of an object within the document
+function rcube_get_object_pos(obj)
+  {
+  if(typeof(obj)=='string')
+    obj = nex_get_object(obj);
+
+  if(!obj) return {x:0, y:0};
+
+  var iX = (bw.layers) ? obj.x : obj.offsetLeft;
+  var iY = (bw.layers) ? obj.y : obj.offsetTop;
+
+  if(bw.ie || bw.mz)
+    {
+    var elm = obj.offsetParent;
+    while(elm && elm!=null)
+      {
+      iX += elm.offsetLeft;
+      iY += elm.offsetTop;
+      elm = elm.offsetParent;
+      }
+    }
+
+  if(bw.mac && bw.ie5) iX += document.body.leftMargin;
+  if(bw.mac && bw.ie5) iY += document.body.topMargin;
+
+  return {x:iX, y:iY};
+  }
+
+var bw = new roundcube_browser();
\ No newline at end of file