Our website navigation is controlled by a javascript function that receives a url parameter. The url parameter tells the javascript function which page to display and the coordinates it needs to slide the body background image into place. The index.html page contains 3 divs (aka: pages). The proper "page" will slide into place when the link is clicked. The links are structrued as follows: <a href="index.html">page link 1</a> <a href="index.html?whichPage=1">page link 2</a> <a href="index.html?whichPage=2">page link 3</a> This function works in every browser except Firefox 4 (including Firefox 3.6.xx, IE 6 through 8, Chrome 11.0.696.68 and Safari 5.0.5). The error console does not throw any errors, the page validates using W3C validator.