function AJAX(args)
{args=args||{};this.method=(args.method=='get')?'get':'post';this.requestTimeout=args.timeout||30;this.xmlResponse=(args.xml==true);this.callBackFunction=null;this.httpRequest=this.createHttpRequest();if(!this.httpRequest)
alert('cannot create httpReauest object...');}
AJAX.prototype.createHttpRequest=function()
{if(window.XMLHttpRequest)
return new XMLHttpRequest();try{return new ActiveXObject("Msxml2.XMLHTTP");}catch(e){try{return new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}}
return null;}
AJAX.prototype.handler=function()
{var response=null;if(this.httpRequest.readyState==4)
{if(this.httpRequest.status==200)
{if(this.xmlResponse)
response=this.httpRequest.responseXML;else
response=this.httpRequest.responseText;}
if(this.callBackFunction!=null)
this.callBackFunction.call(this,response);}}
AJAX.prototype.request=function(destURL,params,procFunc)
{if(!this.httpRequest)
return;var args=this.hashToStr(params);this.callBackFunction=procFunc;this.httpRequest.onreadystatechange=this.handler.bind(this);this.httpRequest.open(this.method,destURL,true);this.httpRequest.setRequestHeader("Content-type","application/x-www-form-urlencoded");this.httpRequest.setRequestHeader("Content-length",args.length);this.httpRequest.setRequestHeader("Connection","close");if(this.httpRequest.timeout)
this.httpRequest.timeout=this.requestTimeout;if(this.httpRequest.overrideMimeType)
this.httpRequest.overrideMimeType(this.xmlResponse?'text/xml':'text/html');this.httpRequest.send(args);}
AJAX.prototype.formRequest=function(destURL,formID,procFunc)
{var args=this.getFormData(formID);this.request(destURL,args,procFunc);}
AJAX.prototype.getFormData=function(formID)
{var theForm=document.getElementById(formID);var args={};for(var e=0;e<theForm.elements.length;e++)
{var name=theForm.elements[e].name;if(!name)continue;args[name]=encodeURIComponent(theForm.elements[e].value);}
return args;}
AJAX.prototype.hashToStr=function(table)
{var args=[];for(var name in table)
args.push(name+'='+table[name]);return args.join('&');}
Function.prototype.bind=function(obj)
{var method=this,temp=function(){return method.apply(obj,arguments);};return temp;}