function clearText(theField)
  {
    if (theField.defaultValue == theField.value)
      theField.value = '';
  }
 
  function addText(theField)
  {
    if (theField.value == '')
      theField.value = theField .defaultValue;
  }
	
function popup(url, windowname, width, height)
{
if (! window.focus)return true;
window.open(url, windowname, 'width='+width+',height='+height+',scrollbars=no');
}