full_3d = new Image();
full_3d.src = "images/3dp_full.gif";
fans_3d = new Image();
fans_3d.src = "images/3dp_fans.gif";
seperator_3d = new Image();
seperator_3d.src = "images/3dp_seperator.gif";
jet_3d = new Image();
jet_3d.src = "images/3dp_filter.gif";
shredder_3d = new Image();
shredder_3d.src = "images/3dp_shredder.gif";
briquetter_3d = new Image();
briquetter_3d.src = "images/3dp_briquetter.gif";
cutters_3d = new Image();
cutters_3d.src = "images/3dp_cutters.gif";
venturi_3d = new Image();
venturi_3d.src = "images/3d_full-grey.gif"; //no image
ductwork_3d = new Image();
ductwork_3d.src = "images/3dp_ductwork.gif";
acoustic_3d = new Image();
acoustic_3d.src = "images/3dp_acoustic.gif";
structure_3d = new Image();
structure_3d.src = "images/3dp_structure.gif";
controlpanel_3d = new Image();
controlpanel_3d.src = "images/3dp_controlpanel.gif";

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