function hoverMenuTop(elmId) {
	var elm = gE(elmId);
	if(elm.style.backgroundImage == '') {
		elm.style.backgroundImage='url(/images/menuTopHoverBackground.gif)';
	} else {
		elm.style.backgroundImage = '';
	}
}

function gE(elmId) {
	return document.getElementById(elmId);
}
function toggleTabs(elmId, tabCollectionName, tabHeaderCollectionName, activeTab) {
	var elementList = document.getElementsByClassName(tabCollectionName);
	for(i = 0; i < elementList.length; i++) {
		elementList[i].style.display = 'none';
	}

	for(n = 0; n < tabHeaderCollectionName.length; n++) {
		var elementList = document.getElementsByClassName(tabHeaderCollectionName[n]);
		for(i = 0; i < elementList.length; i++) {
			elementList[i].className = 'tab';
		}
	}

	activeTab.className = 'activeTab';
	gE(elmId).style.display = 'block';
}