X-Cart forums - Javascript Error

Here is my product.tpl file:
Code:
{* $Id: product.tpl,v 1.96.2.24 2005/11/07 09:17:46 svowl Exp $ *}

{if $active_modules.Special_Offers}

{include file="modules/Special_Offers/customer/product_offers_short_list.tpl" product=$product}

{/if}

{include file="form_validation_js.tpl"}

{if $product.product_type eq "C" && $active_modules.Product_Configurator}

{include file="modules/Product_Configurator/pconf_customer_product.tpl"}

{else}

{capture name=dialog}

<TABLE border="0" width="100%">

<FORM name="orderform" method="post" action="cart.php?mode=add" onsubmit="javascript: return FormValidation();">

<INPUT type="hidden" name="addproductid" value="{$product.productid}">

<INPUT type="hidden" name="slot" value="{$smarty.get.slot}">

<INPUT type="hidden" name="mode" value="add">

<input type="hidden" name="amount" value="1">

<INPUT type="hidden" name="addproductid" value="{$product.productid}">

<INPUT type="hidden" name="slot" value="{$smarty.get.slot}">

<INPUT type="hidden" name="mode" value="add">

<INPUT type="hidden" name="amount" value="1"> 

<TR>

<TD valign="top" align="left" rowspan="2">

<table border="0" width="230" style="border-collapse: collapse">

<tr>

<td valign="top" align="center">{include file="customer/main/product_image_detail.tpl"}</td>

</tr>

<tr>

<td valign="top"></td>

</tr>

<tr>

<td valign="top">

<table border="0" width="100%" cellspacing="7" style="border-collapse: collapse">

<tr>{if $config.Appearance.show_in_stock eq "Y" and $config.General.unlimited_products ne "Y" and $product.distribution eq ""}

<TR><TD width="100" valign="top" height="20" align="right">{$lng.lbl_quantity}</TD>

<TD nowrap height="20" valign="top" align="left"><SPAN id="product_avail_txt">{if $product.avail gt 0}{$product.avail}</SPAN>{else}{$lng.txt_no}{/if} {$lng.txt_items_available}</TD></TR>

{/if}

{if $active_modules.Extra_Fields ne ""}

<tr>

<td colspan="2">

{include file="modules/Extra_Fields/product.tpl"}

</td>

</tr>

{/if}

{if $active_modules.Feature_Comparison ne ""}

{include file="modules/Feature_Comparison/product.tpl"}

{/if}

{if $active_modules.Subscriptions ne "" and $subscription}

{include file="modules/Subscriptions/subscription_info.tpl"}

{else}

<TR><TD class="ProductPriceConverting" valign="top" height="30" align="right" colspan="2">

<table border="0" width="100%" cellpadding="0" style="border-collapse: collapse">

<tr>

<td class="ProductPriceConverting" valign="top" width="100" height="30" align="right">{$lng.lbl_price}:</td>

<TD valign="top" height="30" align="left">

{if $product.taxed_price ne 0 || $variants ne ''}

<FONT class="ProductDetailsTitle"><SPAN id="product_price">{include file="currency.tpl" value=$product.taxed_price}</SPAN></FONT><FONT class="MarketPrice"> <SPAN id="product_alt_price">{include file="customer/main/alter_currency_value.tpl" alter_currency_value=$product.taxed_price}</SPAN></FONT>

{if $product.taxes}

{include file="customer/main/taxed_price.tpl" taxes=$product.taxes}{/if}

{else}

<INPUT type="text" size="7" name="price">

{/if}

</TD>

</tr>

</table>

</TD>

</TR>

{/if}

</tr>

<TR>{if $active_modules.Product_Options ne ""}

{ include file="modules/Product_Options/customer_options.tpl"}

{/if}



{*

<TR><TD height="30" valign="top" align="right" colspan="2">

        <p align="left">{if $config.General.unlimited_products eq "N" and ($product.avail le 0 or $product.avail lt $product.min_amount) and $variants eq ''}

<SCRIPT type="text/javascript" language="JavaScript 1.2">

var min_avail = 1;

var avail = 0;

var product_avail = 0;

</SCRIPT>

{$lng.txt_out_of_stock}

{else}

{if $config.General.unlimited_products eq "Y"}

{math equation="x+1" assign="mq" x=$config.Appearance.max_select_quantity}

{else}

{math equation="x/y" x=$config.Appearance.max_select_quantity y=$product.min_amount assign="tmp"}

{if $tmp<2}

{assign var="minamount" value=$product.min_amount}

{else}

{assign var="minamount" value=1}

{/if}

{math equation="min(maxquantity+minamount, productquantity+1)" assign="mq" maxquantity=$config.Appearance.max_select_quantity minamount=$minamount productquantity=$product.avail}

{/if}

{if $product.distribution eq "" and !($active_modules.Subscriptions ne "" and $subscription)}

{if $product.min_amount le 1}

{assign var="start_quantity" value=1}

{else}

{assign var="start_quantity" value=$product.min_amount}

{/if}

<SCRIPT type="text/javascript" language="JavaScript 1.2">

var min_avail = {$start_quantity|default:1};

var avail = {$mq|default:1}-1;

var product_avail = {$product.avail|default:"0"};

</SCRIPT>

{/if}

{/if}</TD>

</TR>

*}



<TR><TD height="30" valign="top" align="right" colspan="2">

<table border="0" width="100%" style="border-collapse: collapse">

<tr>

<td width="60"></td>

<td>

<INPUT type="hidden" name="mode" value="add">

<p align="center">{if $variants eq ''} {include file="customer/main/product_prices.tpl"} 

{/if} {if $config.General.unlimited_products eq "Y" or ($product.avail gt 0 and 

$product.avail ge $product.min_amount)} {if $js_enabled} {*

*} {if $smarty.get.pconf 

ne ""}

<INPUT type="hidden" name="slot" value="{$smarty.get.slot}">

<INPUT type="hidden" name="addproductid" value="{$product.productid}">

{include file="buttons/button.tpl" button_title=$lng.lbl_pconf_add_to_configuration 

style="button" href="javascript:if (FormValidation()) `$ldelim`document.orderform.productid.value='`$smarty.get.pconf`';document.orderform.action='pconf.php';document.orderform.submit()`$rdelim`"} 

{/if} {if $product.forsale ne "B"} {include file="buttons/add_to_cart.tpl" 

style="button" href="javascript: if(FormValidation()) document.orderform.submit();"} 

{if $login ne "" and $active_modules.Wishlist ne ""} {include 

file="customer/add2wl.tpl"} {/if} {else} {$lng.txt_pconf_product_is_bundled} 

{/if} {else} {include file="submit_wo_js.tpl" value=$lng.lbl_add_to_cart} {/if} 

{/if} {if $active_modules.Feature_Comparison ne ""} {include file="modules/Feature_Comparison/product_buttons.tpl"} 

{/if}</td>

<td width="60"></td>

</tr>

</table>

</TD>

</TR>

</table>

</td>

</tr>

</table>

</TD>

<TD valign="top" width="10">

</TD>

<TD valign="top" width="575">

<SPAN class=>

{if $product.fulldescr ne ""}{$product.fulldescr}{else}{$product.descr}{/if}

</SPAN>

</TD>

</TR>

<INPUT type="hidden" name="productid" value="{$product.productid}">

<INPUT type="hidden" name="cat" value="{$smarty.get.cat|escape:"html"}">

<INPUT type="hidden" name="page" value="{$smarty.get.page|escape:"html"}">

</FORM>

</TABLE>

{/capture}

{*{include file="dialog.tpl" title=$product.producttitle content=$smarty.capture.dialog extra="width=100%"}*}

{include file="customer/main/product_dialog.tpl" title=$product.product content=$smarty.capture.dialog extra="width=100%"}

{/if}

{*{include file="customer/main/send_to_friend.tpl" }

{if $active_modules.Detailed_Product_Images ne ""}

{include file="modules/Detailed_Product_Images/product_images.tpl" }

{/if}*}

{if $active_modules.Upselling_Products ne ""}

{include file="modules/Upselling_Products/related_products.tpl" }

{/if}

{if $active_modules.Recommended_Products ne ""}

{include file="modules/Recommended_Products/recommends.tpl" }

{/if}

{if $active_modules.Customer_Reviews ne ""}

{include file="modules/Customer_Reviews/vote_reviews.tpl" }

{/if}

{if $active_modules.Product_Options ne '' && $product_options ne ''}

<SCRIPT type="text/javascript" language="JavaScript 1.2">

check_options();

</SCRIPT>

{/if}
Thank you for any assistance.

Louise