if (document.images) {
	homeon = new Image();
  homeon.src = "images/navhome_over.gif";
  homeoff = new Image();
  homeoff.src = "images/navhome.gif";

	menuon = new Image();
  menuon.src = "images/navmenu_over.gif";
  menuoff = new Image();
  menuoff.src = "images/navmenu.gif";

	roomson = new Image();
  roomson.src = "images/navrooms_over.gif";
  roomsoff = new Image();
  roomsoff.src = "images/navrooms.gif";

	abouton = new Image();
  abouton.src = "images/navabout_over.gif";
  aboutoff = new Image();
  aboutoff.src = "images/navabout.gif";

	contacton = new Image();
  contacton.src = "images/navcontact_over.gif";
  contactoff = new Image();
  contactoff.src = "images/navcontact.gif";
}
  
function changeImages() {
	if (document.images) {
  	for (var i=0; i<changeImages.arguments.length; i+=2) {
  		document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
  	}
	}
}