function copyNav() {
	if($('main-nav') && $('bottom-nav')) {
		$('bottom-nav').innerHTML = $('main-nav').innerHTML;
	}
}

function setMinHeight() {
	if($('subnav')) {
		cnt = $('subnav').childNodes.length;
		diff = (navigator.userAgent.indexOf("MSIE") > -1) ? 50 : 25;
		if (cnt > 0) {
			h = cnt * diff;
			if (h > 400) $('content').style.minHeight = h + "px";
		}
	}
}