function lightup(imgName) {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
}

function turnoff(imgName) {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
}

function popup(mylink, itemid)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open("larger_image.php?id="+itemid, "", 'width=645,height=500,scrollbars=yes');

}

function popupimg(mylink)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open("uploadim.php", "", 'width=645,height=500,scrollbars=yes');
}

function updatedisplay(dropdown)
{
  var myindex  = dropdown.selectedIndex
  var SelValue = dropdown.options[myindex].value
  window.location="checkout.php?method="+SelValue;
}

function printit()
{
window.print();
}

function jumpto(list) {
    var manufid = list.options[list.selectedIndex].value;
    location.href="prod-range.php?manufacture="+manufid;
}