Event.observe(window, 'load', function() {
	setContentHeight();
});

function setContentHeight() {
	var submenu = $('submenu');
	var content = $('content');
	if (!content) {
		content = $('contentMiddleColumn')
	}
	var minHeight = 400;
	
	if (submenu.getHeight() > minHeight) minHeight = submenu.getHeight();
	if (content.getHeight() > minHeight) minHeight = content.getHeight();
	minHeight += 50;
	$('main').style.height = minHeight + "px";
}