var flag = 0;
	function chkform(thefrm)
	{
	    if(flag == 0)
	    {
			if(! isMobile(thefrm.user_name.value) && ! isEmail(thefrm.user_name.value))
			{
				show_err(thefrm.user_name, "succ_msg", "请输入您的登录邮箱！");
				return false;
			}
			else 
			{
				cancel_err(thefrm.user_name, "succ_msg");
			}
		}
        else if(flag == 1)
        {
        	if(thefrm.login_name.value == "")
			{
				show_err(thefrm.login_name, "succ_msg", "请输入您的登录名！");
				return false;
			}
			else
			{
				cancel_err(thefrm.login_name, "succ_msg");
			}
        }
        
		if(thefrm.passwd.value == "")
		{
			show_err(thefrm.passwd, "succ_msg", "请输入您的登录密码！");
			return false;
		}
		else
		{
			cancel_err(thefrm.passwd, "succ_msg");
		}
		
		
		return true;
	}