Browser Pop-Up Page Height Limit

We have a Java Servlet / JSP application running under Tomcat. At one site, when a browser pop-up window is put up, the height of the page seems to stop before the end of the HTML page that is put up. A vertical scroll bar shown but it does not show all the page. At other sites, the same code works perfectly. The code works under Internet Explorer and also FireFox. We think there may be a browser parameter at the non-working site which is limiting the output. We have looked at the Tools / Internet Options and cannot find anything obvious. The project is to find the reason for the browser page display limit and to fix it. ## Deliverables All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows XP