function swap(objekt) {
	document.getElementById(objekt).src = 'images/'+objekt+'h.jpg';
}
function swapback(objekt) {
	document.getElementById(objekt).src = 'images/'+objekt+'.jpg';
}
function preload_images() {
	var image1 = new Image();
	image1.src = "images/men1h.jpg";
	var image2 = new Image();
	image2.src = "images/men2h.jpg";
	var image3 = new Image();
	image3.src = "images/men3h.jpg";
	var image4 = new Image();
	image4.src = "images/men4h.jpg";
	
}