z-index css

[phil speakman]

i'm using this
div.left = parseInt(div.left)-100;
in a script
so change position of a div
so why can't i use this
div.z-index = parseInt(div.z-index)-100;
to change it's z-index

any help appriciated
Phil

[Anarchos]

That should be zIndex, because div.z-index would treat the "-" as the subtraction operator and try to subtract a variable named "index" from div.z

[vgarcia]

You should also be using [divID].style.left and [divID].style.zIndex to call the properties rather than directly calling left and z-index.

[phil speakman]

cheers to first reply - didn't think of that, but i thought you had to use z-index cos that was it's name, so zIndex is cool yes.

And second reply i have already put the divID into a variable so i am assuming that what you said is unnecessary - but thank none the less.

[vgarcia]

You should be doing something like this:

var theDiv = document.getElementById("blah")
var myLeft = theDiv.style.left;
var myZ = theDiv.style.zIndex;

<div id="blah"></div>

[phil speakman]

You are gonna have to excuse my stupidity - i've changed it to what you said, but now it won't even change the y pos
http://www.philspeakman.com/test/divZ.htm
i get the theory but am not to practised in dhtml - hence me wanting to learn, if you can shed any more light i would appriciate it, Phil