I have a problem positioning an element in certain browsers. I'm using the jQuery autocomplete found here. The div containing autocomplete values should be directly under the text box, and line up perfectly. The code sets the css left property of the div by using the left property generated by $(textbox).offset();

After un-packing the code to try and fix my problem, I get this:

var a = $(textbox).offset();
element.css({
    width: typeof e.width == "string" || e.width > 0 ? e.width : $(textbox).width(),
    top: a.top + textbox.offsetHeight,
    left: a.left
}).show();

This seems like it should work, and it does work in Firefox. It doesn't work in IE8, Chrome. The top position is always correct, but the sometimes the div is too far to the left, or too far to the right.

On different computers (all with Windows XP), it works in IE8... how can this be? I've also tested it on my Mac, OS 10.5. It works in Firefox, but not Safari.

I've disabled plug-ins, changed screen resolutions, re-sized windows... It just inconsistently works in some places sometimes.

Can anyone think of something I'm missing?