<input type="button" onmouseup="this.style.display='none';" value="clickMe" />
causes IE to stop responding to (nearly) all mouse input. Including IE's own menu bar. Reloading the page stops the problem. Generating virtual clicks on other objects does not.
Does anybody here understand why this happens and how I can prevent it from happening? I realise the form presented here has no use whatsoever but on my page it makes sense