/* NAVIGATION */
if(document.images){
homeRoll = new Image();
homeRoll.src = "images/nav-home-on.gif";
homeOff = new Image();
homeOff.src = "images/nav-home.gif";

scanographyRoll = new Image();
scanographyRoll.src = "images/nav-scanography-on.gif";
scanographyOff = new Image();
scanographyOff.src = "images/nav-scanography.gif";

photographyRoll = new Image();
photographyRoll.src = "images/nav-photography-on.gif";
photographyOff = new Image();
photographyOff.src = "images/nav-photography.gif";

contactRoll = new Image();
contactRoll.src = "images/nav-contact-on.gif";
contactOff = new Image();
contactOff.src = "images/nav-contact.gif";

}

function imgRoll(n){
	if(document.getElementById(n+"Link")){document.getElementById(n+"Link").src = eval(n+"Roll").src}
}

function imgOff(n){
	if(document.getElementById(n+"Link")){document.getElementById(n+"Link").src = eval(n+"Off").src}
}