function lmenu() {
	if (document.getElementById) {
		h1 = document.getElementById('colizq').offsetHeight;
		h2 = document.getElementById('contents').offsetHeight;
		h = h2;
		if (h1>h2) h = h1;
		document.getElementById('colizq').style.height = h + 'px';
		document.getElementById('contents').style.height = h + 'px';
	}
}

window.onload = lmenu;