Seems like this auto-complete plugin isn't using the infamous element position technique by quirksmode to find the real position of an element on the page.
Does the label need to be inline with the input box? You could very well fix this by either puttint a <br>
after the label
, or by actually setting a margin-left
on the <div id="myContainer">
element.
Otherwise you should probably file this as a bug, and tell them to use quirksmode way of doing this (it's cross-browser).