Как сделать характеристики select ? - Управление атрибутами, характеристиками и т.п.

<?php if (is_array($characteristic_displayfields) && count($characteristic_displayfields)){?>
			<div class="filter_characteristic">
			<?php foreach($characteristic_displayfields as $ch_id){?>   
				<?php if (is_array($characteristic_fieldvalues[$ch_id])){?>
					<div>
						<div><?php print $characteristic_fields[$ch_id]->name;?></div>                    
						<input type="hidden" name="extra_fields[<?php print $ch_id?>][]" value="0" />   
						
						<select name="extra_fields[<?php print $ch_id?>][]" onchange="modFilterclearPriceFilter()" >					
							
							<option value="0"><?php print _JSHOP_ALL ?></option>					
							<?php foreach($characteristic_fieldvalues[$ch_id] as $val_id=>$val_name){?>
							<option  value="<?php print $val_id;?>" <?php if (is_array($extra_fields_active[$ch_id]) && in_array($val_id, $extra_fields_active[$ch_id])) print 'selected="selected"';?> /> <?php print $val_name;?> </option>
							<?php }?>
							
						</select>
					</div>
				<?php }?>
			<?php }?>
			</div>
		<?php } ?>