Need Help With This Javascript

I have this small javascript that is supposed to resize an iframe. It works when I replace the var name with normal numbers but not with a variable input. Could someone help me out pls? Here is the script:

<script type="text/javascript">
var forumheight = window.height - 120;
document.write("<iframe src=\"http://tim.trap17.com/forum/\" width=\"99%\" height=\"" + forumheight + "\"></iframe>");
</script>

thx in advance

sr, fixed it. Saw something on the internet that helped.

Do you mean this:[br]

nonono, nevermind. i meant if you replaced the var in the document.write with a number. Its meant to resize an Iframe to fit in the window. It works now just in firefox, not in IE. IE seems to ignore the width settings. Could anyone help me with this:

<script type="text/javascript">
var myHeight = 0;
var myWidth = 0;
if( typeof( window.innerWidth ) == 'number' ) {
myHeight = window.innerHeight;
myWidth = window.innerWidth;
}
else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
myHeight = document.documentElement.clientHeight;
myWidth = document.documentElement.clientWidth;
}
else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
myHeight = document.body.clientHeight;
myWidth = document.body.clienWidth;
}
else
{
myHeight = window.height;
myWidth = window.width;
}
myWidth = myWidth - 4;
myHeight = myHeight - 133;
document.write("<iframe src=\"http://tim.trap17.com/school\" width=\"" + myWidth + "\" height=\"" + myHeight + "\"></iframe>");
</script>

Good news !!

I was integrating your script in a basic HTML page and I found the anomaly !
Go to the line 15 and correct it like this
You only forgot the "t" of "client".

I recommend you to debug your program with command like alert('...') in JavaScript, it helps to localize little bugs in all scripts

thx alot. Ill try that