echo "<select id='".$this->get_field_id( "groupID" )."' name='".$this->get_field_id( "groupID" )."'>";
        echo "<option value=''>-- Select Ad Group --</option>";
        $query = "SELECT group_id, group_name FROM sbc_ads_group";
        $result = mysql_query($query) or die(mysql_error());
        $num_rows = mysql_num_rows($result);


        while ($row = mysql_fetch_assoc($result)) {
             $rows[] = $row;
        }
        for($i=0;$i<count($rows);$i++) {
            if($rows[$i]["group_id"] == $groupID) {
            echo "<option name='".$this->get_field_id( 'groupID' )."' value='".$rows[$i]["group_id"]."' select='selected'>".$rows[$i]["group_name"]."</option>";
            } else {
            echo "<option name='".$this->get_field_id( 'groupID' )."' value='".$rows[$i]["group_id"]."'>".$rows[$i]["group_name"]."</option>";
            }
        }


    echo "</select>";