// JavaScript Document



//应用上下文

var context_path = null;


//XMLHttpRequest对象
var xmlHttpRequest = null;


//创建XMLHttpRequest对象
function createRequest()
{
	try
	{
		xmlHttpRequest = new XMLHttpRequest();
	} 
	catch (trymicrosoft) 
	{
		try 
		{
   			xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (othermicrosoft) 
		{
   			try 
   			{
   				xmlHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
  			} 
   			catch (failed) 
   			{
   				xmlHttpRequest = false;
   			}
		}
	}
	if (!xmlHttpRequest)
	{
		window.alert("Error initializing XMLHttpRequest!");
	}
	
}