function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
linkek_03_over = newImage("images/map/linkek_03-over.gif");
linkek_07_over = newImage("images/map/linkek_07-over.gif");

function changeImages() {
	for (var i=0; i<changeImages.arguments.length; i+=2) {
		document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
	}
}