//mei ci geng xin
var Request = new function()
{
	this.pool = new Array();
	this.getXMLHttp = function(chunnel)
	{
		 if(chunnel != null)
		 {
			  for(var a = 0; a < this.pool.length; a++)
			  {
				   if(this.pool[a]["chunnel"] == chunnel)
				   {
					    if(this.pool[a]["obj"].readyState == 0 || this.pool[a]["obj"].readyState == 4)
					    {
							return this.pool[a]["obj"];
					    }
					    else 
					    {
							return "busy";
					    }
				   }
			  }
			  
			  this.pool[this.pool.length] = new Array();
			  this.pool[this.pool.length - 1]["obj"] = this.createXMLHttp();
			  this.pool[this.pool.length - 1]["chunnel"] = chunnel;
			  return this.pool[this.pool.length - 1]["obj"];
		 }
		    
		 for(var i = 0; i < this.pool.length; i++)
		 {
			  if(this.pool[i]["obj"].readyState == 0 || this.pool[i]["obj"].readyState == 4)
			  {
			  		return this.pool[i]["obj"];
			  }
		 }
		 
		 this.pool[this.pool.length] = new Array();
		 this.pool[this.pool.length - 1]["obj"] = this.createXMLHttp();
		 this.pool[this.pool.length - 1]["chunnel"] = "";
		 return this.pool[this.pool.length - 1]["obj"];
	
	}
	
	this.createXMLHttp = function()
	{
		 if(window.XMLHttpRequest)
		 {
		 	var xmlObj = new XMLHttpRequest();
		 } 
		 else 
		 {
			  var MSXML = ['Msxml2.XMLHTTP','Microsoft.XMLHTTP'];
			  for(var n = 0; n < MSXML.length; n++)
			  {
				   try
				   {
						var xmlObj = new ActiveXObject(MSXML[n]);
						break;
				   }
				   catch(e)
				   {
				   }
			  }
		 }
		 return xmlObj;
	}
	
	this.reSend = function(url,data,callback,chunnel)
	{
		 var objXMLHttp = this.getXMLHttp(chunnel)
		 
		 if(typeof(objXMLHttp) != "object")
		 {
			return;
		 }
		 
		 url += (url.indexOf("?") >= 0) ? "&nowtime=" + new Date().getTime() : "?nowtime=" + new Date().getTime();
		
		 if(data == "")
		 {
			  objXMLHttp.open('GET',url,true);
			  objXMLHttp.send('');
		 }
		 else 
		 { 
			  objXMLHttp.open('POST',url,true);
			  objXMLHttp.setRequestHeader("Content-Length",data.length); 
			  objXMLHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
			  objXMLHttp.send(data);
		 }
		 
		 if(typeof(callback) == "function")
		 {
			  objXMLHttp.onreadystatechange = function()
			  {
				   if(objXMLHttp.readyState == 4)
				   {
					    if(objXMLHttp.status == 200 || objXMLHttp.status == 304)
					    {
					    	if(objXMLHttp.responseText != '')
					    	{
					    		callback(objXMLHttp.responseXML);
					    	}
					    }
				   }
			  }
		 }
	}
}


//huo qu quan pan
var AllRequest = new function()
{
	this.pool = new Array();
	this.getXMLHttp = function(chunnel)
	{
		 if(chunnel != null)
		 {
			  for(var a = 0; a < this.pool.length; a++)
			  {
				   if(this.pool[a]["chunnel"] == chunnel)
				   {
					    if(this.pool[a]["obj"].readyState == 0 || this.pool[a]["obj"].readyState == 4)
					    {
							return this.pool[a]["obj"];
					    }
					    else 
					    {
							return "busy";
					    }
				   }
			  }
			  
			  this.pool[this.pool.length] = new Array();
			  this.pool[this.pool.length - 1]["obj"] = this.createXMLHttp();
			  this.pool[this.pool.length - 1]["chunnel"] = chunnel;
			  return this.pool[this.pool.length - 1]["obj"];
		 }
		    
		 for(var i = 0; i < this.pool.length; i++)
		 {
			  if(this.pool[i]["obj"].readyState == 0 || this.pool[i]["obj"].readyState == 4)
			  {
			  		return this.pool[i]["obj"];
			  }
		 }
		 
		 this.pool[this.pool.length] = new Array();
		 this.pool[this.pool.length - 1]["obj"] = this.createXMLHttp();
		 this.pool[this.pool.length - 1]["chunnel"] = "";
		 return this.pool[this.pool.length - 1]["obj"];
	
	}
	
	this.createXMLHttp = function()
	{
		 if(window.XMLHttpRequest)
		 {
		 	var xmlObj = new XMLHttpRequest();
		 } 
		 else 
		 {
			  var MSXML = ['Msxml2.XMLHTTP','Microsoft.XMLHTTP'];
			  for(var n = 0; n < MSXML.length; n++)
			  {
				   try
				   {
						var xmlObj = new ActiveXObject(MSXML[n]);
						break;
				   }
				   catch(e)
				   {
				   }
			  }
		 }
		 return xmlObj;
	}
	
	this.reSend = function(url,data,callback,chunnel,callerror)
	{
		 var objXMLHttp = this.getXMLHttp(chunnel)
		 
		 if(typeof(objXMLHttp) != "object")
		 {
			return;
		 }
		 
		 url += (url.indexOf("?") >= 0) ? "&nowtime=" + new Date().getTime() : "?nowtime=" + new Date().getTime();
		
		 if(data == "")
		 {
			  objXMLHttp.open('GET',url,true);
			  objXMLHttp.send('');
		 }
		 else 
		 { 
			  objXMLHttp.open('POST',url,true);
			  objXMLHttp.setRequestHeader("Content-Length",data.length); 
			  objXMLHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
			  objXMLHttp.send(data);
		 }
		 
		 if(typeof(callback) == "function")
		 {
			  objXMLHttp.onreadystatechange = function()
			  {
				   if(objXMLHttp.readyState == 4)
				   {
					    if(objXMLHttp.status == 200 || objXMLHttp.status == 304)
					    {
					    	if(objXMLHttp.responseText != '')
					    	{
					    		var dateStr = objXMLHttp.getResponseHeader("Date");
					    		callback(objXMLHttp.responseXML,dateStr);
					    	}
					    	else
							{
								if(typeof(callerror) == "function")
									callerror();
							}
					    }
					    else
					    {
							if(typeof(callerror) == "function")
								callerror();
					    }
				   }
			  }
		 }
	}
}