/*
PHP version 5
Copyright (c) 2002-2010 ECISP.CN
声明：这不是一个免费的软件，请在许可范围内使用
作者：Bili E-mail:huangqyun@163.com  QQ:6326420
http://www.ecisp.cn	http://www.easysitepm.com
*/
function AJAXRequest() {
	var xmlPool=[],objPool=[],AJAX=this,ac=arguments.length,av=arguments;
	var xmlVersion=["MSXML2.XMLHTTP","Microsoft.XMLHTTP"];
	var ec=emptyFun=function(){};
	av=ac>0?typeof(av[0])=="object"?av[0]:{}:{};
	var encode=$GEC(av.charset+"");
	var prop=['url','content','method','async','timeout','ontimeout','onrequeststart','onrequestend','oncomplete','onexception'];
	var defval=['','','GET',true,3600000,ec,ec,ec,ec,ec],l=prop.length;
	while(l--){
		this[prop[l]]=getp(av[prop[l]],defval[l]);
	}
	if(!getObj()) return false;
	function getp(p,d) {
		return p!=undefined?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(d){
		var n=d*1;
		return(isNaN(n)?0:n);
	}
	function $VO(v){
		return(typeof(v)=="string"?(v=$(v))?v:false:v);
	}
	function $GID(){
		return((new Date)*1);
	}
	function $SOP(id,ct){
		objPool[id+""]=ct;
	}
	function $LOP(id){
		return(objPool[id+""]);
	}
	function $SRP(f,r,p){
		return(function(s){
			s=f(s);
			for(var i=0;i<r.length;i++) s=s.replace(r[i],p[i]);
			return(s);
		});
	}
	function $GEC(cs){
		if(cs.toUpperCase()=="UTF-8") return(encodeURIComponent);
		else return($SRP(escape,[/\+/g],["%2B"]));
	}
	function $ST(obj,text) {
		var nn=obj.nodeName.toUpperCase();
		if("INPUT|TEXTAREA|OPTION".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 this.oncomplete;
		}
	}
	function $GP(p,v,d,f) {
		var i=0;
		while(i<v.length){
			p[i]=v[i]?f[i]?f[i](v[i]):v[i]:d[i];
			i++;
		}
		while(i<d.length){
			p[i]=d[i];
			i++;
		}
	}
	function send(purl,pc,pcbf,pm,pa) {
		var ct,ctf=false,xmlObj=getObj(),ac=arguments.length,av=arguments;
		if(!xmlObj) return false;
		var pmp=pm.toUpperCase()=="POST"?true:false;
		if(!pm||!purl) return false;
		var ev={
			url:purl,
			content:pc,
			method:pm
		};
		purl+=(purl.indexOf("?")>-1?"&":"?")+"timestamp="+$GID();
		xmlObj.open(pm,purl,pa);
		AJAX.onrequeststart(ev);
		if(pmp) xmlObj.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
		ct=setTimeout(function(){
			ctf=true;
			xmlObj.abort();
		},AJAX.timeout);
		var rc=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);
			}
		}
		xmlObj.onreadystatechange=rc;
		if(pmp) xmlObj.send(pc); else xmlObj.send("");
		if(pa==false) rc();
		return true;
	}
	this.setcharset=function(cs) {
		encode=$GEC(cs);
	}
	this.get=function() {
		var p=[],av=arguments;
		$GP(p,av,[this.url,this.oncomplete],[null,$CB]);
		if(!p[0]&&!p[1]) return false;
		return(send(p[0],"",p[1],"GET",this.async));
	}
	this.update=function() {
		var p=[],purl,puo,pinv,pcnt,av=arguments;
		$GP(p,av,[this.oncomplete,this.url,-1,-1],[$CB,null,$N,$N]);
		if(p[2]==-1) p[3]=1;
		var sf=function(){
			send(p[1],"",p[0],"GET",AJAX.async);
		};
		var id=$GID();
		var cf=function(cc) {
			sf();
			cc--;
			if(cc==0) return;
			$SOP(id,setTimeout(function(){
				cf(cc);
			},p[2]));
		}
		cf(p[3]);
		return id;
	}
	this.stopupdate=function(id) {
		clearTimeout($LOP(id));
	}
	this.post=function() {
		var p=[],av=arguments;
		$GP(p,av,[this.url,this.content,this.oncomplete],[null,null,$CB]);
		if(!p[0]&&!p[2]) return false;
		return(send(p[0],p[1],p[2],"POST",this.async));
	}
	this.postf=function() {
		var p=[],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("onvalidate");
		vaf=vaf?(typeof(vaf)=="string"?new Function(vaf):vaf):null;
		if(vaf&&!vaf()) return false;
		$GP(p,[av[1],fo.getAttribute("action"),fo.getAttribute("method")],[this.oncomplete,this.url,this.method],[$CB,null,null]);
		pcbf=p[0];
		purl=p[1];
		if(!pcbf&&!purl) return false;
		pc=this.formToStr(fo);
		if(!pc) return false;
		if(p[2].toUpperCase()=="POST")
			return(send(purl,pc,pcbf,"POST",true));
		else {
			purl+=(purl.indexOf("?")>-1?"&":"?")+pc;
			return(send(purl,"",pcbf,"GET",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;
	}
}