function setLeftHeight() {
	var height = document.getElementById('content').offsetHeight;
	var left   = document.getElementById('left');
	var logo   = document.getElementById('logo');
	var tmpHeight = left.offsetHeight;
	
	left.style.height = height + 'px';
	logo.style.position = 'relative';
	logo.style.top = (height - tmpHeight) + 'px'
}