function Checklogin() {
if (document.formLogin.UserID.value=="")
	{
	  alert("Please enter your User ID, thanks! ");
	  document.formLogin.UserID.focus();
	  return false;
	 }
else if(document.formLogin.Password.value=="")
	{
	  alert("Please enter your Password, thanks! ");
	  document.formLogin.Password.focus();
	  return false;
	 }
  return true;
}