function validate_required(field,alerttxt)
{
with (field)
  {
  if (value==null||value=="")
    {
    alert(alerttxt);return false;
    }
  else
    {
    return true;
    }
  }
}

function checkform(form)
{
with (form)
  {

    
 if (validate_required(Email,"Email must be filled out!")==false)
  {Email.focus();return false;}

  
 }
}