//代替document.getElementById为$(id)
function $(id) {
	return document.getElementById(id);
}

//将验证信息反馈到ObjectID中
function ShowCheckResult(ObjectID, Message, ImageName) {
	obj = $(ObjectID);
	obj.style.display = '';
	obj.innerHTML = '<img src="images/check_'+ImageName+'.gif" align=absmiddle>&nbsp;' + Message;
}

//Ajax Start
function Ajax_GetXMLHttpRequest() {
	if (window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	} 
	else if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	}
}
function Ajax_CallBack(ID,URL)
{
	var ID = $(ID);
	ID.innerHTML = '<img src="images/check_loading.gif" align=absmiddle>';
	var x = Ajax_GetXMLHttpRequest();
	x.open("POST",URL);
	x.setRequestHeader("REFERER", location.href);
	x.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gb2312");
	x.onreadystatechange = function()
	{
		if(x.readyState == 4 && x.status == 200)
		{
			ID.innerHTML=x.responseText;
			ID.style.display = '';
		}
	}
	var encodedData=""
	encodedData=escape(URL);
	x.send(encodedData);
}