Embeded Form not working in IE7

Embeded Form not working in IE7

The following HTML code is embeded in two separate websites and neither will display the form properly in IE7. Works great in Firefox2.

<iframe height="2311px" width="100%" name="zohoform66" frameborder="0" scrolling="no" src="http://creator.zoho.com/showForm.do?formLinkId=66&link=true&sharedBy=jjwhite"></iframe>

All my other forms work great on the sites, just not this one.

Any ideas why?