function CheckmemLogin(){
	if(document.memberlogin.userid.value=="")
	{
		document.getElementById("usertishi").innerHTML = "<font color=red style=clear:both;>提示：请输入用户名!</font>";

		document.memberlogin.userid.focus();
		return false;
	}
	else if(document.memberlogin.userpwd.value=="")
	{
	    document.getElementById("usertishi").innerHTML = "";
		document.getElementById("passtishi").innerHTML = "<font color=red style=clear:both;>提示：请输入密码!</font>";
		//alert("密码不能为空");
		document.memberlogin.userpwd.focus();
		return false;
	}
	//else if(document.memberlogin.authnumtext.value=="")   //取消验证码
	//{
	   // document.getElementById("passtishi").innerHTML = "";
		//document.getElementById("yanzhengtishi").innerHTML = "<font color=red style=clear:both;>提示：请输入验证码!</font>";
		//alert("验证码不能为空");
		//document.memberlogin.authnumtext.focus();
		//return false;
	//}	
}

function changeauth()
{
	//var num=""+Math.random()+"";
	//num=num.substring(2,7);
	document.getElementById("img1").src="/admin/include/authimg.php";	
	
	//document.getElementById("authnumber").value=num;
	
}