// Swap image function
  function ChangeImage (ImageName, FileName) {
    if (document.images) {
      document[ImageName].src = eval(FileName + ".src");
    }
  }


/// NAV Image preloader
if (document.images) {
  n1a = new Image(1,1);
  n1a.src = "images/n1a.gif";
  n1b = new Image(1,2);
  n1b.src = "images/n1b.gif";

  n2a = new Image(1,3);
  n2a.src = "images/n2a.gif";
  n2b = new Image(1,4);
  n2b.src = "images/n2b.gif";

  n3a = new Image(1,5);
  n3a.src = "images/n3a.gif";
  n3b = new Image(1,6);
  n3b.src = "images/n3b.gif";

  n4a = new Image(1,7);
  n4a.src = "images/n4a.gif";
  n4b = new Image(1,8);
  n4b.src = "images/n4b.gif";

  n5a = new Image(1,9);
  n5a.src = "images/n5a.gif";
  n5b = new Image(1,10);
  n5b.src = "images/n5b.gif";

  n6a = new Image(1,11);
  n6a.src = "images/n6a.gif";
  n6b = new Image(1,12);
  n6b.src = "images/n6b.gif";

  n7a = new Image(1,13);
  n7a.src = "images/n7a.gif";
  n7b = new Image(1,14);
  n7b.src = "images/n7b.gif";

  n8a = new Image(1,15);
  n8a.src = "images/n8a.gif";
  n8b = new Image(1,16);
  n8b.src = "images/n8b.gif";

  n9a = new Image(1,17);
  n9a.src = "images/n9a.gif";
  n9b = new Image(1,18);
  n9b.src = "images/n9b.gif";
}


// OPEN WINDOW SCRIPT - CENTERED
var win = null;
function openWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no'
win = window.open(mypage,myname,settings)
}

// rotate Images on refresh
var theImages = new Array()
theImages[0] = 'images/welpic06.jpg'
theImages[1] = 'images/welpic07.jpg'
theImages[2] = 'images/welpic08.jpg'
theImages[3] = 'images/welpic09.jpg'
theImages[4] = 'images/welpic10.jpg'
theImages[5] = 'images/welpic11.jpg'
theImages[6] = 'images/welpic12.jpg'

var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img src="'+theImages[whichImage]+'" name="mainPic01">');
}