function swapImage() { //v1.0
  var i,theObj,j=0,swapArray=new Array,oldArray=document.swapImgData;
  for (i=0; i < (swapImage.arguments.length-2); i+=3) {
    theObj = eval(swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1])
    if (theObj != null) {
      swapArray[j++] = theObj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=theObj)?theObj.src:oldArray[j];
      theObj.src = swapImage.arguments[i+2];
  } }
  document.swapImgData = swapArray; //used for restore
}

function swapImgRestore() { //v1.0
  if (document.swapImgData != null)
    for (var i=0; i<(document.swapImgData.length-1); i+=2)
      document.swapImgData[i].src = document.swapImgData[i+1];
}

function NavPhoto(direction)
{
	var iNewPos = iCurrentPos + direction;
	if(iNewPos<1)
		iNewPos = iMaxPhotos;
	if(iNewPos>iMaxPhotos)
		iNewPos = 1;
	iCurrentPos = iNewPos;
	//alert('iCurrentPos=' + iCurrentPos + ' direction=' + direction + ' iNewPos=' + iNewPos);
	document.photoX.src = PhotoArray[iNewPos];
}