var image_index=1;
function show_image(src,images) {
 if ( images > 1 ) document.getElementById('pagecurl').style.backgroundImage="URL(./images/Pagecurl.gif)"
 document.getElementById('carpic').style.backgroundImage="URL(./images/"+src+"_"+image_index+".jpg)"
 image_index = image_index + 1;
 if ( image_index > images ) image_index = 1;
return }