print_off = new Image();
print_on = new Image();
print_off.src = "media/images/popup/pop_pbut_off.gif";
print_on.src = "media/images/popup/pop_pbut_on.gif";
close_off = new Image();
close_on = new Image();
close_off.src = "media/images/popup/pop_cbut_off.gif";
close_on.src = "media/images/popup/pop_cbut_on.gif";

function rover(image) { if(document.images[image]) document.images[image].src = eval(image+"_on.src"); }
function rout(image) { if(document.images[image]) document.images[image].src = eval(image+"_off.src"); }