Well the jquery method will work. You need to put this in your <head>:
HTML:<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
then in another script tag put:
HTML:<script> $(function() { var h = $("#center").outerHeight(); // outerHeight return height plus padding $('#leftcol').css('height', h); $('#rightcol').css('height', h); }) </script>
That being said, the best way to do this is going to be border images. It will require editing your image pretty precisely but in the end it will yield the best and fastest results.
This worked in firefox and even IE but did not work in Chrome.