Today I've stumbled upon a problem with boxModel detection already reported as many different bugs: http://dev.jquery.com/ticket/4267, http://dev.jquery.com/ticket/4320, http://dev.jquery.com/ticket/4406, http://dev.jquery.com/ticket/4552, http://dev.jquery.com/ticket/4558, and also in a recent message here by Andrea Giammarchi related to his sandboxing issues. It occurs at line 3204 of jquery-1.3.2.js, when the page you are showing is visibly incomplete, and you click a (redirect) link already available. In my case, the page contains seven visible IFRAMEs and two hidden. My solution has been to include lines 3204 - 3206 into an if (document.body) and to downgrade boxModel detection to the method from an older version of jQuery in the else clause. Is this correct? Are there better solutions?