Where does this CRAZY encrypted number come from?

I use the attribute image changing routine. Everything works great until I add an item to my cart and then click my cart link to return to the product. The problem is a bit of code that becomes embedded in my page after the add.

<select name="id[3]" id="attrib-3" onchange="getattribimage('id[2]',270,270, this.value,3:61a814e571cc23679040247e4fa9615f);">

What is the information following the "3:"? Is it a cart session? Is it critical?

It is critical, think of it as the "id" of the attributes chosen.

Thank you. But...if I remove it from the link in the shopping cart (back to the product page), it will still function, correct?

Based on some A/B testing, it looks like this crazy number is messing up my javascript (probably the colon). I can remove it FROM THE CART LINK ONLY and I think the cart will still function properly. Correct?

I am currently looking at parsing the right side after the colon.

THANKS!

The entire number including the colon and hash after the colon are important if someone is attempting to edit the actual items already in the shopping cart. If you don't want to let them do that, feel free to remove the colon and hash.

But wouldn't it be better instead to url-encode the colon from within your script that's breaking things?

I think you're probably correct about coding, but once I realized the link was NOT relative and there were two colons in the address (the full string actually includes the http://), I decided to simply customize the code and link back to the product category anyway.

In case anyone is interested, use this line to link back to the category from the shopping cart product.

<a href="index.php?main_page=index&cPath=<?php echo zen_get_products_category_id($product['id']);?>"><span id="cartImage" class="back"><?php echo $product['productsImage']; ?></span><span id="cartProdTitle"><?php echo zen_get_categories_name_from_product($product['id']) . ' - ' . zen_get_products_description($product['id']) . ' ' . $product['productsName'] . '<span class="alert bold">' . $product['flagStockCheck'] . '</span>'; ?></span></a>

What I'm curious about now is how to show an attribute-specific image in the cart. In my case, I have a "red" shirt image tied to the attribute "red". It displays the correct image when I select the attribute, but it displays the base image in the cart. Any thoughts?