function resizeContent() {
	var left = document.getElementById('contentl');
	var right = document.getElementById('contentr');
	var left_h = left.offsetHeight;
	var right_h = right.offsetHeight;
	if(left_h < right_h) {
		left.style.height = (right_h-26)+'px';
	} else if(left_h > right_h) {
		right.style.height = (left_h-26)+'px';
	}
}