full_3d = new Image();
full_3d.src = "images/3d_full.gif";
newsprint_3d = new Image();
newsprint_3d.src = "images/3d_newsprint.gif";
commercialprint_3d = new Image();
commercialprint_3d.src = "images/3d_commercialprint.gif";
labels_3d = new Image();
labels_3d.src = "images/3d_labels.gif";
board_3d = new Image();
board_3d.src = "images/3d_board.gif";
dustcontrol_3d = new Image();
dustcontrol_3d.src = "images/3d_dustcontrol.gif";
foil_3d = new Image();
foil_3d.src = "images/3d_foil.gif";
papermill_3d = new Image();
papermill_3d.src = "images/3d_papermill.gif";
tissue_3d = new Image();
tissue_3d.src = "images/3d_tissue.gif";

function changeImage(imagename,imagesrc) {
	document.images[imagename].src=imagesrc.src;
	return true;
}