//JS验证邮箱正确与否
function isEmail(s)
{ 
	if(s ==  "")
		return false; 
    s = s.replace(/＠/ig,"@"); 
    if(s.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
		return true; 
    else
		return false; 
}
//检查用户名
function CheckInfo(docid,str,gourl)
{
	try
	{
		var oUserInfo = new ActiveXObject('Microsoft.XMLHTTP');
		var sName = escape(str);
		var userInfo = 'ChkStr='+sName;
		oUserInfo.open('POST',gourl,false);
		oUserInfo.setRequestHeader('Content-Type','application/x-www-form-urlencoded')
		oUserInfo.send(userInfo);
		var ResResult = oUserInfo.responseText;
		document.getElementById(docid).innerHTML = ResResult;
	}
	catch(e)
	{ 
	}
}
//更换验证图片
function ChangeImg(imgid,imgurl)
{
	try
	{
		document.getElementById(imgid).src = imgurl;
	}
	catch(e)
	{ 
	}		
}