document.iframeLoaders = {};

processForm = Class.create();
processForm.prototype = 
{
	initialize: function(form, options, loadingMessage)
	{
		if (!options) options = {};
		this.form = form;
		this.uniqueId = new Date().getTime();
		document.iframeLoaders[this.uniqueId] = this;
		this.transport = this.getTransport();
		this.onComplete = options.onComplete || null;
		this.update = $(options.update) || null;
		this.updateMultiple = options.multiple || false;
		form.target= 'frame_'+this.uniqueId;
		form.setAttribute("target", 'frame_'+this.uniqueId);
		form.submit();
		this.loadingMessage = loadingMessage;
		this.update.innerHTML = '<div id="loadingMessage" style="text-align: center; font-weight: bold; padding: 2px;"><img src="images/1/loading.gif" /> '+this.loadingMessage+'</div>';
	},

	onStateChange: function()
	{
		this.transport = $('frame_'+this.uniqueId);
		try //NS6
		{   
			var doc = this.transport.contentDocument.document.body.innerHTML; this.transport.contentDocument.document.close(); 
		}			
		catch (e)
		{ 
			try //IE5.5 AND IE6
			{ 
				var doc = this.transport.contentWindow.document.body.innerHTML; this.transport.contentWindow.document.close(); 
			}
			catch (e)
			{
				try  //IE5
				{ 
					var doc = this.transport.document.body.innerHTML; this.transport.document.body.close(); 
				}
				catch (e) 
				{
					try	//BROWSERS WHICH SUCK
					{ 
						var doc = window.frames['frame_'+this.uniqueId].document.body.innerText; 
					} 
					catch (e) {} //END OF STORY
				}
			}
		}
		
		this.transport.responseText = doc;
		if (this.onComplete)
		{
			setTimeout(function(){this.onComplete(this.transport);}.bind(this), 10);
		}
		if (this.update) 
		{
			setTimeout(function(){this.update.innerHTML = this.transport.responseText; execJs(this.update);}.bind(this), 10);
		}
		if (this.updateMultiple)
		{ 
			setTimeout(
				function() //JSON
				{ 
					try	
					{ 
						var hasscript = false; eval("var inputObject = "+this.transport.responseText);
						for (var i in inputObject) 
						{ 
							if (i == 'script') 
							{ 
								hasscript = true; 
							}
							else 
							{
								if (elm = $(i)) 
								{ 
									elm.innerHTML = inputObject[i]; 
									execJs(elm);
								} 
								else 
								{ 
									alert('Element error: '+i+'!'); 
								} 
							}
						} 
						if (hasscript)
						{
							eval(inputObject['script']);
						}
					} 
					catch (e) 
					{ 
						alert('Error: '+this.transport.responseText); 
					}
				}
			.bind(this), 10);
		}	
	},

	getTransport: function() 
	{
		var divElm = document.createElement('DIV');
		divElm.style.position = "absolute";
		divElm.style.top = "0";
		divElm.style.marginLeft = "-10000px";
		if (navigator.userAgent.indexOf('MSIE') > 0 && navigator.userAgent.indexOf('Opera') == -1) 
		{
			divElm.innerHTML = '<iframe name=\"frame_'+this.uniqueId+'\" id=\"frame_'+this.uniqueId+'\" src=\"about:blank\" onload=\"setTimeout(function(){document.iframeLoaders['+this.uniqueId+'].onStateChange()},20);"></iframe>';
		} 
		else 
		{
			var frame = document.createElement("iframe");
			frame.setAttribute("name", "frame_"+this.uniqueId);
			frame.setAttribute("id", "frame_"+this.uniqueId);
			frame.addEventListener("load", 	function(){	this.onStateChange(); }.bind(this), false);
			divElm.appendChild(frame);
		}
		document.getElementsByTagName("body").item(0).appendChild(divElm);
	}
};