var xmlHttp;

function createXMLHttpRequest()
{
	if(window.ActiveXObject)
	{
		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}	
	else if(window.XMLHttpRequest)
	{
		xmlHttp=new XMLHttpRequest();
	}
	
}

function startRequest(showDiv,returnData,mode,aUrl)
{
	createXMLHttpRequest();
	if(showDiv!="")
		eval(showDiv)
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{	
			if(xmlHttp.status==200)
			{
				eval(returnData)
			}
		}
	}
	
	if(mode=="GET")
	{	
		xmlHttp.open(mode,aUrl+"&ts="+new Date().getTime(),true);
		xmlHttp.send(null);
	}	
}
function postRequest(showDiv,returnData,mode,afile,aurl)
{
	createXMLHttpRequest();
	if(showDiv!="")
		eval(showDiv)
	xmlHttp.onreadystatechange=function()
	{	
		if(xmlHttp.readyState==4)
		{
			if(xmlHttp.status==200)
			{	
				eval(returnData)
			}
		}
	}
	if(mode=="POST")
	{	
		xmlHttp.open(mode,afile,true);
		//post方法,一定要加这句

		xmlHttp.setRequestHeader( "Content-Type" , "application/x-www-form-urlencoded" ); 
		xmlHttp.send(aurl+"&ts="+new Date().getTime());
	}		
}
function selectCountry() 
{
	if ( document.forms[0].user_address_n.value != "CN") 
	{	//隐藏城市的下拉菜单			
		document.all["user_city_div"].style.display="none" ;
	} else {
		document.all["user_city_div"].style.display="" ;
	}
}
function isTel(str) 
{//电话——应该允许填多个（仅对第一个号码校验即可），提示逗号分隔符5到12位之间	
		
	var mask=/(^[0-9\-/]{5,12}$)/
	var temp_str= str.split(",");	
	if(temp_str[0].length<5 || temp_str[0].length>12)
		return "请重输：固定电话只能是5~12位数"		
	var bMatched = mask.exec(temp_str[0]) ;
	if ( !bMatched ) 
	{
		return "1" ;//false
	} else {
		return "0" ;//true
	}
}
function isNumber(value) 
{
	var mask = /^[0-9]*$/ ;		
	var bMatched = mask.exec(value);
	if (!bMatched) {
		return false;
	}
	return true;	
}
function isEmail(value) 
{
	var mask = /^[a-z]([a-z0-9\.]*[-_]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[\.][a-z]{2,3}([\.][a-z]{2})?$/i;
	var bMatched = mask.exec(value);
	if (!bMatched) {
		return false;
	}
	return true;	
}

//去左空格; 
function ltrim(s){ 
return s.replace( /^\s*/, ""); 
} 
//去右空格; 
function rtrim(s){ 
return s.replace( /\s*$/, ""); 
} 
//去左右空格; 
function trim(s){ 
return rtrim(ltrim(s)); 
}

function checkLogin(memb_id)
{
	if(memb_id==null ||memb_id=="")
	{
		alert("此功能只对企业会员开放,使用此功能请先注册成为企业会员")	
		return false
	}
}

//去左空格; 
function ltrim(s)
{ 
	return s.replace( /^\s*/, ""); 
} 
//去右空格; 
function rtrim(s)
{ 
	return s.replace( /\s*$/, ""); 
} 
//去左右空格; 
function trim(s)
{ 
	return rtrim(ltrim(s)); 
}
//弹出新窗口

function openWindow(URL,Title) { //v2.0
	window.open(URL,Title,"scrollbars=yes,width=550,height=400,left="+(window.screen.width-550)/2+",top="+(window.screen.height-400)/2+'"')
}


//判断字符中是含有中文
function   strChina(astr)
{    
	var sign
	for(var i=0;i<astr.length;i++)
	{
		
		if(astr.charAt(i).match(/^[\u4e00-\u9fa5]*$/g)!=null)
			sign=true
		else
			sign=false
		if(sign==true)
			break;
	}
	return   sign
}