Checking Height Of Two Columns - Which One Is Greater

I'm trying to make a script that will check which of the two column heights is greater, make both equal to the greater height, then apply that height to the content wrapper. Here's that I have so far...

Code:
$(document).ready(function () {var rColumnHeight = $('#right_column').css('height');
var lColumnHeight = $('#left_column').css('height');[
if (lColumnHeight > rColumnHeight) {[
$('#body_content').css('height', lColumnHeight)
}else if(rColumnHeight > lColumnHeight ){
$('#body_content').css('height', rColumnHeight)
}});

Now this seems to work making the content wrapper's height equal to the greater column height, but I can't figure out how to make the two columns equal heights.