// -----------------------------------------------------------------------------------
// CheckAll()
// -----------------------------------------------------------------------------------
function CheckAll( myForm)
  {
	if( myForm)
    {
		var c = myForm.ALL.checked;
    if( ! c )
      c = myForm.ALL.checked = false;
    }

	for( var i = 0; i < myForm.elements.length; i++ )
    {
		var e = myForm.elements[ i];
    if(( e.checked != c) && ( e.type == "checkbox") && e.name !='offer_only' )
      {
      e.checked = c;
      }
	  }
  }