Error when integrating web to lead form to google site

Error when integrating web to lead form to google site

Hi,

My goal is to design web to lead forms all around diffrerent pages of my google apps web site.

But when I copy/paste the HTML form code into my google app web site, I get an error message from google apps.
First it says the form code is too large and in addition to that it seems that google apps refuses some of the tags and wants to clean the form HTML.

Is there any Zoho CRM gadget to replace web to lead form ? (I specify I would need it in French and customizable).

Or please do you know any turnaround ? Do I need to use an external site to store the form ? :-(