var XMLHttp={_objPool:[],_getInstance:function(){for(var i=0;i<this._objPool.length;i++){if(this._objPool[i].readyState==0||this._objPool[i].readyState==4){return this._objPool[i]}}this._objPool[this._objPool.length]=this._createObj();return this._objPool[this._objPool.length-1]},_createObj:function(){if(window.XMLHttpRequest){var objXMLHttp=new XMLHttpRequest()}else{var MSXML=['MSXML2.XMLHTTP.5.0','MSXML2.XMLHTTP.4.0','MSXML2.XMLHTTP.3.0','MSXML2.XMLHTTP','Microsoft.XMLHTTP'];for(var n=0;n<MSXML.length;n++){try{var objXMLHttp=new ActiveXObject(MSXML[n]);break}catch(e){}}}if(objXMLHttp.readyState==null){objXMLHttp.readyState=0;objXMLHttp.addEventListener("load",function(){objXMLHttp.readyState=4;if(typeof objXMLHttp.onreadystatechange=="function"){objXMLHttp.onreadystatechange()}},false)}return objXMLHttp},GetRemoteData:function(url,callback){XMLHttp.sendReq('GET',url,null,callback)},PostRemoteData:function(url,callback,data){XMLHttp.sendReq('POST',url,data,callback)},GetRemoteText:function(url,callback){XMLHttp.sendReqText('GET',url,null,callback)},PostRemoteText:function(url,callback,data){XMLHttp.sendReqText('POST',url,data,callback)},sendReq:function(method,url,data,callback){var objXMLHttp=this._getInstance();with(objXMLHttp){try{if(url.indexOf("?")>0){url+="&randnum="+Math.random()}else{url+="?randnum="+Math.random()}open(method,url,true);setRequestHeader("Content-Type","application/x-www-form-urlencoded");send(data);onreadystatechange=function(){if(objXMLHttp.readyState==4&&(objXMLHttp.status==200||objXMLHttp.status==304)){callback(objXMLHttp.responseXML)}}}catch(e){alert(e)}}},sendReqText:function(method,url,data,callback){var objXMLHttp=this._getInstance();with(objXMLHttp){try{if(url.indexOf("?")>0){url+="&randnum="+Math.random()}else{url+="&randnum="+Math.random()}open(method,url,true);setRequestHeader("Content-Type","application/x-www-form-urlencoded");send(data);onreadystatechange=function(){if(objXMLHttp.readyState==4&&(objXMLHttp.status==200||objXMLHttp.status==304)){callback(objXMLHttp.responseText)}}}catch(e){alert(e)}}}};