function resize_div(){	
	var left_nav = Position.get(document.getElementById('left_nav'));
	var right_nav;	
	if(document.getElementById('right_nav')){
		right_nav = Position.get(document.getElementById('right_nav'));
		if(left_nav['height'] > right_nav['height'] ){
			document.getElementById('right_nav').style.height = (left_nav['height'] - 24) + 'px';
		}
	}else if(document.getElementById('right_nav_landing')){
		right_nav = Position.get(document.getElementById('right_nav_landing'));
		if(left_nav['height'] > right_nav['height'] ){
			document.getElementById('right_nav_landing').style.height = (left_nav['height'] - 10) + 'px';
		}		
	}
}