Currency Module problem when place it in mainnav

<div class="hikashop_currency_module" id="hikashop_currency_module_<?php echo $module->id; ?>">
<?php if(empty($mode_noform)) { ?>
	<form action="<?php echo hikashop_completeLink('currency&task=update'); ?>" method="post" name="hikashop_currency_form_<?php echo $module->id; ?>">
		<input type="hidden" name="return_url" value="<?php echo urlencode($redirectUrl); ?>" />
		<?php echo $currency->display('hikashopcurrency',hikashop_getCurrency(),'class="hikashopcurrency" onchange="document.hikashop_currency_form_'.$module->id.'.submit();"'); ?>
	</form>
<?php } else {
	echo $currency->display(null, hikashop_getCurrency(), 'class="hikashopcurrency" id="hikashopcurrency_'.$module->id.'" onchange="window.localPage.switchCurrency(this);"');
?>
<script type="text/javascript">
if(!window.localPage) window.localPage = {};
window.localPage.switchCurrency = function(el) {
	var url = "<?php echo hikashop_completeLink('currency&task=update&hikashopcurrency={ID}'); ?>";
	url += ((url.indexOf("?") !== false) ? "?" : "&") + "return_url=<?php echo urlencode($redirectUrl); ?>";
	window.location = url.replace("{ID}", el.value);
};
</script>
<?php } ?>
</div>