MouseOver Effect - Right Method?

[Trip]

Quick question. I am creating a mouse over effect for a couple of small icons and was just wondering if the method I am using is the most efficient and common way of achieving this. Wrapped below is the main part of the code I am using. It works and it's XHTML valid, however, I was wondering is this the best way to create a mouse over effect.

onmouseover="document.but.src='icon2.gif'"
onmouseout="document.but.src='icon1.gif'"

[Hell Bomb]

*EDIT*
If I am not mistaken this uses some javascript so this may not be the best way to do it. I'll post back when I can find a better way to do it.

If anyone has any good ways to do this let me know I am having trouble finding the right method that will work well in vb3.8.5

[Trip]

I agree, java can be a little dirty in this case. I have it running without issue but I don't feel great about the way I'm doing this. It does work in all browsers, except IE6, of course .
Thanks for posting

[DavidsMods]

It could be possible for you to use CSS either. Something like:

<style type="text/css">
.myclass {
background: #000 url(PATH_TO_IMG);
}

.myclass:hover {
background: #000 url(PATH_TO_OTHER_IMG);
}
</style>

<div class="myclass">
Content
</div>