// preload images
var img11 = new Image().src = 'images/products/option11.png'
var img12 = new Image().src = 'images/products/option12.png'
var img15 = new Image().src = 'images/products/option15.png'
var img26 = new Image().src = 'images/products/option26.png'
var img27 = new Image().src = 'images/products/option27.png'
var img28 = new Image().src = 'images/products/option28.png'
var img121 = new Image().src = 'images/products/option121.png'
var img223 = new Image().src = 'images/products/option223.png'
var img224 = new Image().src = 'images/products/option224.png'
var img225 = new Image().src = 'images/products/option225.png'
var img226 = new Image().src = 'images/products/option226.png'
var img227 = new Image().src = 'images/products/option227.png'
var img316 = new Image().src = 'images/products/option316.png'
var img317 = new Image().src = 'images/products/option317.png'
var img318 = new Image().src = 'images/products/option318.png'
var img328 = new Image().src = 'images/products/option328.png'

function setImage1(imageSelect) {
  if (document.images)
     document.images['option1'].src = eval('img1' + imageSelect);
  }

function setImage2(imageSelect) {
  if (document.images)
     document.images['option2'].src = eval('img2' + imageSelect);
  }

function setImage3(imageSelect) {
  if (document.images)
     document.images['option3'].src = eval('img3' + imageSelect);
  }

popBoxWaitImage.src = "images/popbox/spinner40.gif";
popBoxRevertImage = "images/popbox/magminus.gif";
popBoxPopImage = "images/popbox/magplus.gif";

function setSelectedIndex(selid, valsel) {
    for ( var i = 0; i < document.getElementById(selid).length; i++ ) {
        if ( document.getElementById(selid).options[i].value == valsel ) {
            document.getElementById(selid).options[i].selected = true;
            return;
        }
    }
}

function doubleonclick1(selectid, valselect, imgSelect) {
  setSelectedIndex(selectid, valselect);
  setImage1(imgSelect);
}
function doubleonclick2(selectid, valselect, imgSelect) {
  setSelectedIndex(selectid, valselect);
  setImage2(imgSelect);
}

function doubleonclick3(selectid, valselect, imgSelect) {
  setSelectedIndex(selectid, valselect);
  setImage3(imgSelect);
}

function ampcheck() {
     box = eval("document.product_form.option[4]"); 
     box.checked = !box.checked;
}