// JavaScript Document

var xmlhttp;
var strName;
//ulr--地址页面
//Parameters--接收参数,没有就写null
//method--传递方式,Post或GET
//str,strName是输入的ID
function startRequest(url,Parameters,method,str)
{
	strName=str;
	createXMLHttpRequest();
	xmlhttp.onreadystatechange=Callback;
	xmlhttp.open(method,url+"?SID=" + Math.random(), true);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xmlhttp.send(Parameters);

}
//创建XMLHttpRequest对象,IE浏览器与非IE浏览器
function createXMLHttpRequest()
{	
	if(window.ActiveXObject)
	{
		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest)
	{
		xmlhttp = new XMLHttpRequest();
	}
}
//回调
function Callback()
{
	if(xmlhttp.readyState==4)
	{
		if(xmlhttp.status==200)
		{
			document.getElementById(strName).innerHTML=xmlhttp.responseText;
		}
		else
		{
			document.getElementById(strName).innerHTML="正在加载...";
		}
	}
	else
	{
		document.getElementById(strName).innerHTML="正在加载...";
	}
}