if(document.images) {

  necklaceup = new Image; necklaceup.src = "../buttons/necklace_buttons_up.gif";
  necklacedown = new Image; necklacedown.src = "../buttons/necklace_buttons_down.gif";
  lapelup = new Image; lapelup.src = "../buttons/lapel_pin_buttons_up.gif";
  lapeldown = new Image; lapeldown.src = "../buttons/lapel_pin_buttons_down.gif";
  scrollup = new Image; scrollup.src = "../buttons/scroll_buttons_up.gif";
  scrolldown = new Image; scrolldown.src = "../buttons/scroll_buttons_down.gif";
  earup = new Image; earup.src = "../buttons/ear_ring_buttons_up.gif"
  eardown = new Image; eardown.src = "../buttons/ear_ring_buttons_down.gif";
  largedown = new Image; largedown.src = "../buttons/large_projects_buttons_down.gif";
  largeup = new Image; largeup.src = "../buttons/large_projects_buttons_up.gif";
  sculpturedown = new Image; sculpturedown.src = "../buttons/sculptures_buttons_down.gif";
  sculptureup = new Image; sculptureup.src = "../buttons/sculptures_buttons_up.gif";
  carvingup = new Image; carvingup.src = "../buttons/carvings_buttons_up.gif";
  carvingdown = new Image; carvingdown.src = "../buttons/carvings_buttons_down.gif";
  intarsiadown = new Image; intarsiadown.src = "../buttons/intarsia_buttons_down.gif";
  intarsiaup = new Image; intarsiaup.src = "../buttons/intarsia_buttons_up.gif";
  ornamentsdown = new Image; ornamentsdown.src = "../buttons/ornaments_buttons_down.gif";  
  ornamentsup = new Image; ornamentsup.src = "../buttons/ornaments_buttons_up.gif";  
}

function change(imageName, imageFile){
  if(!document.images) return;
  document.images[imageName].src = eval(imageFile + ".src");
}

<!-- Original:  Nannette Thacker (nannette@shiningstar.net) -->
<!-- Web Site:  http://www.shiningstar.net -->

var version4 = (navigator.appVersion.charAt(0) == "4"); 
var popupHandle;

function closePopup() {
  if(popupHandle != null && !popupHandle.closed) popupHandle.close();
}

function displayPopup(position,url,name,height,width,evnt) {
  // position=1 POPUP: makes screen display up and/or left, down and/or right 
  // depending on where cursor falls and size of window to open
  // position=2 CENTER: makes screen fall in center
  var properties = "toolbar = 0, location = 0, height = " + height;
  properties = properties + ", width=" + width;
  var leftprop, topprop, screenX, screenY, cursorX, cursorY, padAmt;
  if(navigator.appName == "Microsoft Internet Explorer") {
    screenY = document.body.offsetHeight;
    screenX = window.screen.availWidth;
  }
  else {
    screenY = window.outerHeight
    screenX = window.outerWidth
  }
  if(position == 1)	{ // if POPUP not CENTER
    cursorX = evnt.screenX;
    cursorY = evnt.screenY;
    padAmtX = 10;
    padAmtY = 10;
    if((cursorY + height + padAmtY) > screenY) {
      // make sizes a negative number to move left/up
      padAmtY = (-30) + (height * -1);
      // if up or to left, make 30 as padding amount
    }
    if((cursorX + width + padAmtX) > screenX)	{
      padAmtX = (-30) + (width * -1);	
      // if up or to left, make 30 as padding amount
    }
    if(navigator.appName == "Microsoft Internet Explorer") {
      leftprop = cursorX + padAmtX;
      topprop = cursorY + padAmtY;
    }
    else {
      leftprop = (cursorX - pageXOffset + padAmtX);
      topprop = (cursorY - pageYOffset + padAmtY);
    }
    }
    else{
      leftvar = (screenX - width) / 2;
      rightvar = (screenY - height) / 2;
      if(navigator.appName == "Microsoft Internet Explorer") {
        leftprop = leftvar;
        topprop = rightvar;
      }
      else {
        leftprop = (leftvar - pageXOffset);
        topprop = (rightvar - pageYOffset);
      }
    }
    if(evnt != null) {
      properties = properties + ", left = " + leftprop;
      properties = properties + ", top = " + topprop;
    }
    closePopup();
    popupHandle = open(url,name,properties);
  }