function checkUncheckAll(theElement) {
 var theForm = theElement.form, z = 0;
 for(z=0; z<theForm.length;z++)
 {
  if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall')
  {
   theForm[z].checked = theElement.checked;
  }
 }
}