function Uri(){
	if (Uri.__el) return Uri.el;
	Uri.__el = this;
	var me = this;
	this.get_Host=function(){return location.host;}
	this.get_HostName = function(){return location.hostname;}
	this.get_Port = function(){return location.port;}
	this.get_Query = function(){return location.search;}
	this.get_File = function(){return me.file;}
	this.get_FileName = function(){return me.fileName;}
	this.get_FileExt = function(){return me.fileExt;}
	this.get_Param = function(key){return me.param[key];}
	this.toString = function(){return location.href;}
	var s = location.href;
	var sAt = s.indexOf("?");
	if (sAt>0)s = s.substr(0,sAt);
	var s1 = s.split('/');
	if (s1.length>0){
		var file = me.file =s1[s1.length-1];
		var dotAt = file.indexOf(".");
		if (dotAt>0){
			me.fileExt = file.substr(dotAt+1);
			me.fileName = file.substr(0,dotAt);
		}
	}else{ me.file = s;me.fileExt = "";}
	var q = location.search;
	var param = me.param ={};
	if (q){
		q = q.substr(1);
		var x1 = q.split('&');
		for(var i=0;i<x1.length;i++){
			var x2 = x1[i];
			var key,value;
			var eqAt = x2.indexOf('=');
			if (eqAt>=0&&eqAt<x2.length-1){
				key = x2.substr(0,eqAt);
				value = x2.substr(eqAt+1); 
			}else{key = x2;}
			if (key.length==0)continue;
			param[key] = value;
		}
	}
}
function loadScript(url){
	var script = document.createElement('script');
	function ins(p){ p.appendChild(script); script.src = url; return script; }
	if (document.getElementsByTagName){
		var heads = document.getElementsByTagName('head');
		if (heads.length>0){return ins(heads[0]);}
	}
	if (document.documentElement) return ins(document.documentElement);
	if (document.body)return ins(document.body);
	document.open();
	document.write("<script type='text/javascript' src='"+url+"' />");
	document.close();
	return;
}