Rollover Images

I have some text which will be used as a button. On rollover I want to display and image in an image placeholder outside the table cell which the text resolves.

So kinda like


a href="home.php" onMouseOver="showimageinplaceholder" >my text</a>

Any ideas? I can only find examples and tutorials on how to have mouseOver images. see text is my “image” and i dont want the rollOver image to appear instead of the text.

I’m so bad at javascript =(