Using javaScript to set style zIndex

[Claus Mygind]

How come I can set this style element

document.getElementById("popTime").style.left =  "0px";

but not this

document.getElementById("freqJobDiv").style.zIndex = "20";

I have two nested division on the screen. I want to use a mouseover to bring the back division to the front. It seems I can get all the style properties to work except for zindex

However when I do it in the HTML it works fine like this

	
<div
  id="freqJobDiv"
  onmouseout="freqJobDiv.style.zIndex=0;"
  onmouseover="freqJobDiv.style.zIndex = 20;"
>

[Claus Mygind]

Never mind now it seems to work. Hmm!