ÿþfunction AJAXRequest() {

	var xmlPool=[],AJAX=this,ac=arguments.length,av=arguments;

	var xmlVersion=["MSXML2.XMLHTTP","Microsoft.XMLHTTP"];

	var emptyFun=function(){};

	var av=ac>0?typeof(av[0])=="object"?av[0]:{}:{};

	var encode=av.charset?av.charset.toUpperCase()=="UTF-8"?encodeURIComponent:escape:encodeURIComponent;

	this.IsUploadFile=false;

	this.url=getp(av.url,"");

	this.oncomplete=getp(av.oncomplete,emptyFun);

	this.content=getp(av.content,"");

	this.method=getp(av.method,"POST");

	this.async=getp(av.async,true);

	this.onexception=getp(av.onexception,emptyFun);

	this.ontimeout=getp(av.ontimeout,emptyFun);

	this.timeout=getp(av.timeout,3600000);

	this.onrequeststart=getp(av.onstartrequest,emptyFun);

	this.onrequestend=getp(av.onendrequest,emptyFun);

	if(!getObj()) return false;

	function getp(p,d) { return p?p:d; }

	function getObj() {

		var i,j,tmpObj;

		for(i=0,j=xmlPool.length;i<j;i++) if(xmlPool[i].readyState==0||xmlPool[i].readyState==4) return xmlPool[i];

		try { tmpObj=new XMLHttpRequest; }

		catch(e) {

			for(i=0,j=xmlVersion.length;i<j;i++) {

				try { tmpObj=new ActiveXObject(xmlVersion[i]); } catch(e2) { continue; }

				break;

			}

		}

		if(!tmpObj) return false;

		else { xmlPool[xmlPool.length]=tmpObj; return xmlPool[xmlPool.length-1]; }

	}

	function $(id){return document.getElementById(id);}

	function $N(n,d){n=parseInt(n);return(isNaN(n)?d:n);}

	function $VO(v) {

		if(typeof(v)=="string") {

			if(v=$(v)) return v;

			else return false; }

		else return v;

	}

	function $ST(obj,text) {

		var nn=obj.nodeName.toUpperCase();

		if("INPUT|TEXTAREA".indexOf(nn)>-1) obj.value=text;

		else try{obj.innerHTML=text;} catch(e){};

	}

	function $CB(cb) {

		if(typeof(cb)=="function") return cb;

		else {

			cb=$VO(cb);

			if(cb) return(function(obj){$ST(cb,obj.responseText);});

			else return emptyFun; }

	}

	function send(purl,pc,pcbf,pm,pa) {

		var purl,pc,pcbf,pm,pa,ct,ctf=false,xmlObj=getObj(),ac=arguments.length,av=arguments;

		if(!xmlObj) return false;

		if(!pm||!purl||!pa) return false;

		var ev={url:purl, content:pc, method:pm};

		purl+=(purl.indexOf("?")>-1?"&":"?")+Math.random();

		xmlObj.open(pm,purl,pa);

	

		AJAX.onrequeststart(ev);

		//if(pm=="POST") xmlObj.setRequestHeader("Content-Type","application/x-www-form-urlencoded");



		if(!AJAX.IsUploadFile){

		    if(pm=="POST") xmlObj.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		}else{

		    if(pm=="POST") xmlObj.setRequestHeader("Content-Type","multipart/form-data");

		}

		ct=setTimeout(function(){ctf=true;xmlObj.abort();},AJAX.timeout);

		xmlObj.onreadystatechange=function() {

			if(ctf) { AJAX.ontimeout(ev); AJAX.onrequestend(ev); }

			else if(xmlObj.readyState==4) {

				ev.status=xmlObj.status;

				try{ clearTimeout(ct); } catch(e) {};

				try{ if(xmlObj.status==200) pcbf(xmlObj); else AJAX.onexception(ev); }

				catch(e) { AJAX.onexception(ev); }

				AJAX.onrequestend(ev);

			}

		}

		if(pm=="POST") xmlObj.send(pc); else xmlObj.send("");

	}

	this.setcharset=function(cs) {

		if(cs.toUpperCase()=="UTF-8") encode=encodeURIComponent; else encode=escape;

	}

	this.get=function() {

		var purl,pcbf,ac=arguments.length,av=arguments;

		purl=ac>0?av[0]:this.url;

		pcbf=ac>1?$CB(av[1]):this.oncomplete;

		if(!purl&&!pcbf) return false;

		send(purl,"",pcbf,"GET",true);

	}

	this.update=function() {

		var purl,puo,pinv,pcnt,ac=arguments.length,av=arguments;

		puo=ac>0?$CB(av[0]):emptyFun;

		purl=ac>1?av[1]:this.url;

		pinv=ac>2?$N(av[2],1000):null;

		pcnt=ac>3?$N(av[3],0):null;

		if(pinv) {

			send(purl,"",puo,"GET",true);

			if(pcnt&&--pcnt) {

				var cf=function(cc) {

					send(purl,"",puo,"GET",true);

					if(cc<1) return; else cc--;

					setTimeout(function(){cf(cc);},pinv);

				}

				setTimeout(function(){cf(--pcnt);},pinv);

			}

			else return(setInterval(function(){send(purl,"",puo,"GET",true);},pinv));

		}

		else send(purl,"",puo,"GET",true);

	}

	this.post=function() {

		var purl,pcbf,pc,ac=arguments.length,av=arguments;

		purl=ac>0?av[0]:this.url;

		pc=ac>1?av[1]:"";

		pcbf=ac>2?$CB(av[2]):this.oncomplete;

		if(!purl&&!pcbf) return false;

		send(purl,pc,pcbf,"POST",true);

	}

	this.postf=function() {

		var fo,vaf,pcbf,purl,pc,pm,ac=arguments.length,av=arguments;

		fo=ac>0?$VO(av[0]):false;

		if(!fo||(fo&&fo.nodeName!="FORM")) return false;

		vaf=fo.getAttribute("onsubmit");

		vaf=vaf?(typeof(vaf)=="string"?new Function(vaf):vaf):null;

		if(vaf&&!vaf()) return false;

		pcbf=ac>1?$CB(av[1]):this.oncomplete;

		purl=ac>2?av[2]:(fo.action?fo.action:this.url);

		pm=ac>3?av[3]:(fo.method?fo.method.toUpperCase():"POST");

		if(!pcbf&&!purl) return false;

		pc=this.formToStr(fo);

		if(!pc) return false;

		if(pm) {

			if(pm=="POST") send(purl,pc,pcbf,"POST",true);

			else if(purl.indexOf("?")>0) send(purl+"&"+pc,"",pcbf,"GET",true);

				else send(purl+"?"+pc,"",pcbf,"GET",true);

		}

		else send(purl,pc,pcbf,"POST",true);

	}



	this.formToStr=function(fc) {

		var i,qs="",and="",ev="";

		for(i=0;i<fc.length;i++) {

			e=fc[i];

			if (e.name!='') {

				if (e.type=='select-one'&&e.selectedIndex>-1) ev=e.options[e.selectedIndex].value;

				else if (e.type=='checkbox' || e.type=='radio') {

					if (e.checked==false) continue;

					ev=e.value;

				}

				else ev=e.value;

				ev=encode(ev);

				qs+=and+e.name+'='+ev;

				and="&";

			}

		}

		return qs;

	}

}