Works in Chrome not Firefox

I have used the following to create zoom button which work fine within Chrome but not Firefox.

<input type="button" value="A" ONCLICK="zoomin();" class="zoombutton" >
<input type="button"  value="a" ONCLICK="zoomout();" class="zoombutton" >
<script language="JavaScript" type="text/javascript">

function zoomin(){
function zoomout(){

Thanks in advance

The CSS zoom property is a relatively new one, supported only in CSS3 I think.

Because it’s relatively new, you’ll find that there is not a full level of support for it yet.

Duplicate thread.

Because there’s a fuller discussion in the other thread, I’m closing this one.