function equalHeight() {
			if (document.getElementById('main') && document.getElementById('side')) {
				var mainHeight = document.getElementById('main').offsetHeight;
				var sideHeight = document.getElementById('side').offsetHeight;
				
				if (sideHeight < mainHeight) { document.getElementById('side').style.minHeight = mainHeight + 'px'; document.getElementById('side').style.paddingBottom = 0; }
				if (mainHeight < sideHeight) { document.getElementById('main').style.minHeight = sideHeight + 'px'; } 
			}
		}