img15 = new Image;
img15.src = "indexorange.gif";
img16 = new Image;
img16.src = "portfolioorange.gif";
img17 = new Image;
img17.src = "levelbooksorange.gif";
img18 = new Image;
img18.src = "partnersorange.gif";
img19 = new Image;
img19.src = "contactorange.gif";