function menu_setActive(itemNo,elemStatus) {
	// get Element (image)
	elemImage = document.getElementById("menuitem" + itemNo + "_img");
	elemDiv = document.getElementById("menuitem" + itemNo);
	
	// set new attributes
	newZIndex = 10;
	newImageSrc = elemImage.src.replace("_off","_on");
	
	if (!elemStatus) {
		newZIndex = itemNo;
		newImageSrc = elemImage.src.replace("_on","_off");
	}
	
	// change attributes
	if (itemNo != 7) {
	  elemDiv.style.zIndex = newZIndex;
	}
	elemImage.src = newImageSrc;
}