function mouseover_menu(id) {
	ids = new Array("KANZLEI", "KOMPETENZ", "SERVICE", "KONTAKT", "FIRM", "EXPERTISE", "CONTACT");
	
	if(id == "NONE") {
		// document.getElementById('NONE').style.display = 'block';
		for(var i = 0; i <= ids.length; i++) {
			if(document.getElementById(ids[i])) {
				document.getElementById(ids[i]).style.visibility = "hidden";
				document.getElementById(ids[i]).style.display = "none";
			}
		}

	} else {
		for(var i = 0; i <= ids.length; i++) {
			if(ids[i] != id) {
				if(document.getElementById(ids[i])) {
					document.getElementById(ids[i]).style.visibility = "hidden";
					document.getElementById(ids[i]).style.display = "none";
				}
			} else {
				if(document.getElementById(ids[i])) {
					document.getElementById(ids[i]).style.visibility = "visible";
					document.getElementById(id).style.display = "block";
				}
			}
		}
		document.getElementById('NONE').style.visibility = "hidden";
		document.getElementById('NONE').style.display = "none";
	}
}

mouseover_menu('NONE');