function resize() {
	var h_menu = document.
			defaultView.
			getComputedStyle(
				document.getElementById('menu'), null
			).
			getPropertyValue('height', null);
        var h_content = document.
			defaultView.
			getComputedStyle(
				document.getElementById('content'), null
			).getPropertyValue('height', null);
	h_menu = parseInt(h_menu);
	h_content = parseInt(h_content);
	if(h_menu > h_content)
		document.getElementById('content').style.height = h_menu - 20 + 'px';
}
window.onload=resize;