Zen Cart product page variables

[m3s_4ev3r]

Hello, I want to place an icon on my product page that sends on yahoo messenger the link to the current page.

I have tried with

<a href="ymsgr:im?+&msg=http://www.abcplus.ro/index.php?main_page=product_info&products_id=<?=$prducts_id?>&zenid<?=$zenid?>">Yahoo</a>

Obviously $products_id and the $zenid aren't the good variables.

What variables should I put in there so that I can trasmit the link of the current page

[Kim]

You never want to send a zenID to a public place - that is a security hazard.