function backgroundDark(elem) {
	elem.style.backgroundImage = "url(../images/menuhighlightback.jpg)";
	elem.style.color = "white";
	document.getElementsByTagName('body')[0].style.cursor='pointer';
}
function backgroundLight(elem) {
	elem.style.backgroundImage = "url(../images/menuback.jpg)";
	elem.style.color = "#595959";
	document.getElementsByTagName('body')[0].style.cursor='auto';
}