function Last1(select) {
   odier1 = select.options[select.selectedIndex].value;
   if (odier1 == '1') {document.Last.amount.value = '34.95'; document.Last.on0.value='Hard Cover'; document.Last.on1.value='$34.95 ea.';}
   if (odier1 == '2') {document.Last.amount.value = '29.95'; document.Last.on0.value='Soft Cover'; document.Last.on1.value='$29.95 ea.';}
}

function Rock1(select) {
   odier1 = select.options[select.selectedIndex].value;
   if (odier1 == '1') {document.Rock.amount.value = '29.95'; document.Rock.on0.value='Hard Cover'; document.Rock.on1.value='$29.95 ea.';document.Rock.item_number.value='0-9611632-0-8';}
   if (odier1 == '2') {document.Rock.amount.value = '19.95'; document.Rock.on0.value='Soft Cover'; document.Rock.on1.value='$19.95 ea.';document.Rock.item_number.value='0-9611632-1-6';}
}