function swap(imgName, imgFile) {
  if (document.images) 
    document.images[imgName].src = imgFile;
}

function loadPage(url)
{
	var PositionX = 100;
	var PositionY = 100;
	
	window.open(url, '', 'scrollbars=no,width=400,height=200,left='+PositionX+',top='+PositionY);
}