Resize <div> cross browser

I am using this code to resize a <div> dynamically and works fine in IE 6 but it does not work in NS 7.1 or Opera or Firefox and it needs to at least work in Mozilla-based browsers and IE5.x.  I know the problem is in line 6.

<script type="text/javascript">        
  function adjustDiv()
      {
      var rb = document.getElementById('rightBorder').offsetHeight;
      var lsb = document.getElementById('leftSidebar').offsetHeight-rb;
      document.getElementById('rightBorder').style.height = document.getElementById('mainContent').height-lsb || document.getElementById('mainContent').offsetHeight-lsb;
}
      window.onload=adjustDiv
</script>
LVL 1
andrewshkaAsked:
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COBOLdinosaurCommented:
Standard compliant browser require the unit of measure for style settings:

<script type="text/javascript">        
  function adjustDiv()
     {
     var rb = document.getElementById('rightBorder').offsetHeight;
     var lsb = document.getElementById('leftSidebar').offsetHeight-rb;
     var=hgt = document.getElementById('mainContent').height-lsb || document.getElementById('mainContent').offsetHeight-lsb;
 document.getElementById('rightBorder').style.height=hgt+'px';
}
     window.onload=adjustDiv
</script>

Cd&
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andrewshkaAuthor Commented:
SWEET!  That works great, thanks so much COBOLdinosaur :)
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