Yes it's right. Maybe you don't have a space between onClick="exit=false" & href= or something, or the classic

you forgot to upload the changed page and you are reloading the page and wondering why it doesn't work! Hehe, c'mon, that doesn't only happen to me does it???
Here, I'll give an example, and even throw in the onmouseover code for hiding your sponsor code as well:
Just replace all occurences (4) of {} with <>
{a onClick="exit=false" href="http://www.yourdomain.com" ONMOUSEOVER="window.status='http://www.whatever-you-want.com';return true" onMouseOut="self.status='';return true"}Text Link, blah blah blah{/a}
and since html is enabled on this board here is a working example:
<a onClick="exit=false" href="http://www.yourdomain.com" ONMOUSEOVER="window.status='http://www.whatever-you-want.com';return true" onMouseOut="self.status='';return true">Text Link, blah blah blah</a>
Bruce