function Submit_OnClick(butname)
{
   if(butname=="Login")
    {
        if(document.frm.txtuserid.value=="")
        {
            alert("UserId can't be empty.");
            document.frm.txtuserid.focus();
            return false;
        }

        if(document.frm.txtpassword.value=="" )
        {
           alert("Password can't be empty");
           document.frm.txtpassword.focus();
           return false;
        }
           
            
            document.frm.txthidval1.value = "Login";
        return;
    }
             
}