problem product page tab

<div id="hikashop_product_bottom_part" class="hikashop_product_bottom_part show_tabular">
	<div id="hikashop_tabs_div">
    
		<ul class="hikashop_tabs_ul">
			<li id="hikashop_show_tabular_description_li" class="hikashop_tabs_li ui-corner-top"><?php echo JText::_('PRODUCT_DESCRIPTION');?></li>
			<?php if($hide_specs == 0){ ?>
			<li id="hikashop_show_tabular_specification_li" class="hikashop_tabs_li ui-corner-top"><?php echo JText::_('SPECIFICATIONS');?></li>
			<?php }
			if($status_vote == "comment" || $status_vote == "two" || $status_vote == "both" ){
			?>
			<li id="hikashop_show_tabular_comment_li" class="hikashop_tabs_li ui-corner-top"><?php echo JText::_('PRODUCT_COMMENT');?></li>
			<li id="hikashop_show_tabular_new_comment_li" class="hikashop_tabs_li ui-corner-top"><?php echo JText::_('PRODUCT_NEW_COMMENT');?></li>
			<?php } ?>
		</ul>
		<?php
		if(!empty($this->element->extraData->bottomBegin))
			echo implode("\r\n",$this->element->extraData->bottomBegin);
		?>
		<div class="hikashop_tabs_content" id="hikashop_show_tabular_description">
			<div id="hikashop_product_description_main" class="hikashop_product_description_main">
				<?php
				echo JHTML::_('content.prepare',preg_replace('#<hr *id="system-readmore" */>#i','',$this->element->product_description));
				?>
			</div>
			<span id="hikashop_product_url_main" class="hikashop_product_url_main">
				<?php
				if (!empty ($this->element->product_url)) {
					echo JText :: sprintf('MANUFACTURER_URL', '<a href="' . $this->element->product_url . '" target="_blank">' . $this->element->product_url . '</a>');
				}
				?>
			</span>
		</div>
		<?php if($hide_specs == 0){ ?>
		<div class="hikashop_tabs_content" id="hikashop_show_tabular_specification">
		<?php
			$this->setLayout('show_block_dimensions');
			echo $this->loadTemplate();
			if(!empty($this->fields)){
				$this->setLayout('show_block_custom_main');
				echo $this->loadTemplate();
			}
		?>
		</div>
		<?php }
if($status_vote == "comment" || $status_vote == "two" || $status_vote == "both" ){ ?>
<form action="<?php echo hikashop_currentURL() ?>" method="post" name="hikashop_comment_form" id="hikashop_comment_form">
		<?php
		if(!empty($this->element->extraData->bottomMiddle))
			echo implode("\r\n",$this->element->extraData->bottomMiddle);
		?>
			<div class="hikashop_tabs_content" id="hikashop_show_tabular_comment">
				<div id="hikashop_product_vote_listing" class="hikashop_product_vote_listing">
					<?php
						echo $layout_vote_listing;
					?>
				</div>
			</div>
			<div class="hikashop_tabs_content" id="hikashop_show_tabular_new_comment">
				<div id="hikashop_product_vote_form" class="hikashop_product_vote_form">
					<?php
						echo $layout_vote_form;
					?>
				</div>
			</div>
</form>
<?php } ?>
<input type="hidden" name="selected_tab" id="selected_tab" value="hikashop_show_tabular_description"/> 
		<?php
		if(!empty($this->element->extraData->bottomEnd))
			echo implode("\r\n",$this->element->extraData->bottomEnd);
		?>
        
	</div>
</div>
<script type="text/javascript">
	if(typeof(hkjQuery) == "undefined") window.hkjQuery = window.jQuery;
	window.hikashop.ready( function(){
		var selectedTab = hkjQuery( "#selected_tab" ).val();
		hkjQuery("#hikashop_tabs_div").children("div").css("display","none");
		hkjQuery( "#"+selectedTab+"_li" ).addClass("hikashop_tabs_li_selected");
		hkjQuery("#"+selectedTab).css("display","inherit");
		hkjQuery( "#hikashop_tabs_div" ).children().children().click(function(){
			var currentLi = hkjQuery(this).attr("id");
			var currentDiv = currentLi.replace("_li","");
			hkjQuery("#hikashop_tabs_div").children("div").css("display","none");
			hkjQuery("#hikashop_tabs_div").children("form").children("div").css("display","none");
			hkjQuery("#"+currentDiv).css("display","inherit");
			hkjQuery( ".hikashop_tabs_li_selected" ).removeClass("hikashop_tabs_li_selected");
			hkjQuery( "#"+currentLi ).addClass("hikashop_tabs_li_selected");
		});
	});
</script>