function over(imgname) {
	var overname =  imgname + "_aktiv.jpg";
	var overpath = "images/" + overname;
	document.getElementById(imgname).src =  overpath;
}

function out(imgname) {
	var overname =  imgname + ".jpg";
	var overpath = "images/" + overname;
	document.getElementById(imgname).src =  overpath;
}
function overNavi(imgname,imageid) {
	var overpath = "images/" + imgname;
	document.getElementById(imageid).src =  overpath;
}

function outNavi(imgname,imageid) {
	var overpath = "images/" + imgname;
	document.getElementById(imageid).src =  overpath;
}
function overKontakt(divname) {
	document.getElementById(divname).style.visibility = 'visible';
}

function outKontakt(divname) {
	document.getElementById(divname).style.visibility = 'hidden';
}