function setTall() {
	if ( document.getElementById ) {
		var mainArea = document.getElementById('mainContainer');
		var leftArea = document.getElementById('lhsContainer');
		var mainHeight = mainArea.offsetHeight;
		var leftHeight = leftArea.offsetHeight;
		if( leftHeight < mainHeight ) {
			leftArea.style.height = mainHeight + 'px';
		}
	}
}