I have a set of tooltip functions that use the title attribute of an element to set the html of a specified tooltip and then show / hide.

All of the tooltips on the page share the same display element, so I just create it without an end tag.

<span id="tooltip" class="tooltipClass" />

In IE when I do $('#' + tooltip).html(text); some html outside of (after) the span is getting overwritten. In my case it happened to be <script> which broke some other things. This did not happen in Firefox.

I finally narrowed it down using

alert($('#' + tooltipid).html());

prior to .html(text), which gave me a screen-sized window showing the next element, a script block.

Fix for me was to write the span in full

<span id="tooltip" class="tooltipClass"></span>

This is actually more appropriate anyway, but since you guys pride yourselves in the cross-browser game, and Firfox handles it either way, I thought it worth mentioning.

Thanks again for an amazing tool.