function go_pop_up(url)
		{
		  if (navigator.appName == "Microsoft Internet Explorer")
		  {
		    if ( navigator.appVersion.indexOf( "Macintosh" ) != -1 ) // IE Mac
		    {
		      window.open(url,'','status=no,location=no,menubar=no,toolbar=no,scrollbars=no,width=280,height=260,top=0,left=0,resizable=yes');
		    }
		    else // IE Win
		    {
		      window.open(url,'','status=no,location=no,menubar=no,toolbar=no,scrollbars=no,width=280,height=260,top=0,left=0,resizable=yes');
		    }
		  }
		  if (navigator.appName != "Microsoft Internet Explorer")
		  {
		    if ( navigator.appVersion.indexOf( "Macintosh" ) != -1 ) // Netscape Mac
		    {
		      window.open(url,'','status=no,location=no,menubar=no,toolbar=no,scrollbars=no,width=280,height=260,top=0,left=0,resizable=yes');
		    }
		    else // Netscape WIn
		    {
		      window.open(url,'','status=no,location=no,menubar=no,toolbar=no,scrollbars=no,width=280,height=260,top=0,left=0,resizable=yes');
		    }
		  }
		}

function swapModel(imageID,imagePath,linkID,linkURL) {
	document.getElementById(imageID).src = imagePath;
	document.getElementById(linkID).href = linkURL;
}

function preloadImage(imageURL) {
	theImage = new Image();
	theImage.src = imageURL;
}