non w3c validation caused by ampersand problem

Hi, help needed

if I try to validate, for instance, this page,

http://nutriweb-suplementos.com/loja/Twinlab

in w3c validator, it will give 5 errors,

the problem ? "&zenid=098..." it does not validate that ampersand, but it is really werid cause it validates all others,

if I look at the file functions>html_output.php, there is a variable $link overthere that joins the sessions id with the link you're at, the problem is that when i modify that function to use ? instead of & for &zenid, it gives me 246 errors and stops validating all other ampersands,

if I try to change & to &, it doesn't parses me the ";" and gives me a link output full off "&amp%"

Can someone please help me ?

A clean uncustomized freshly-unzipped install of Zen Cart v1.3.8 renders the separators correctly.

Sounds like you've got a bug in one or more of your addons.

I just finished a site that had the same thing. What it comes down to is that you need to use zen_href_link function. For all links this function builds the & amp ; instead of just a & which is fail the failing point.

I use version 1.38 , have the same problems, and I just use two add ons 1.google analytics configuration 2.simple seo URL, is either one cause the problems.
and where can I get zen_href_link function to solve my problem
my web is https://www.boxertiedown.com and error is
http://validator.w3.org/check?uri=http%3A%2F%2Fboxertiedown.com%2Fwholesale%2F&charset=%28detect+automatically%29&doctype=Inline&ss=1&group=0&accept=image%2Fgif%2C+image%2Fx-xbitmap%2C+image%2Fjpeg%2C+image%2Fpjpeg%2C+application%2Fx-shockwave-flash%2C+application%2Fvnd.ms-excel%2C+application%2Fvnd.ms-powerpoint%2C+application%2Fmsword%2C+*%2F*&accept-language=zh-tw&user-agent=W3C_Validator%2F1.654
hope can solve my problem

This is not a problem from Zen Cart - it is your SEO addon.

thanks It nerrow down my errors, I find out the problem really cause by simple seo url, I will try to find out the problems

thanks It nerrow down my errors, I find out the problem really cause by simple seo url, I will try to find out how to solve this problem