homeOut = new Image;
homeOut.src = "images/home1.jpg";
homeOver = new Image;
homeOver.src = "images/home2.jpg";
aboutOut = new Image;
aboutOut.src = "images/about1.jpg";
aboutOver = new Image;
aboutOver.src = "images/about2.jpg";
caseOut = new Image;
caseOut.src = "images/case_examples1.jpg";
caseOver = new Image;
caseOver.src = "images/case_examples2.jpg";
contactOut = new Image;
contactOut.src = "images/contact1.jpg";
contactOver = new Image;
contactOver.src = "images/contact2.jpg";