imgHomeOff = new Image;
imgHomeOff.src = "/images/Home.jpg";
imgSearchOff = new Image;
imgSearchOff.src = "/images/Search.jpg";
imgHelpOff = new Image;
imgHelpOff.src = "/images/Help.jpg";
imgAboutOff = new Image;
imgAboutOff.src = "/images/about.jpg";
//imgProfessionalOff = new Image;
//imgProfessionalOff.src = "/images/professional.jpg";
//imgPersonalizeOff = new Image;
//imgPersonalizeOff.src = "/images/personalize.jpg";

imgHomeOn = new Image;
imgHomeOn.src = "/images/home-over.jpg";
imgSearchOn = new Image;
imgSearchOn.src = "/images/search-over.jpg";
imgHelpOn = new Image;
imgHelpOn.src = "/images/help-over.jpg";
imgAboutOn = new Image;
imgAboutOn.src = "/images/about-over.jpg";
//imgProfessionalOn = new Image;
//imgProfessionalOn.src = "/images/professional-over.jpg";
//imgPersonalizeOn = new Image;
//imgPersonalizeOn.src = "/images/personalize-over.jpg";

imgGHomeOff = new Image;
imgGHomeOff.src = "/images/home.gif";
imgGHomeOn = new Image;
imgGHomeOn.src = "/images/home_over.gif";
imgGlaucomascanOff = new Image;
imgGlaucomascanOff.src = "/images/glaucomacheck.gif";
imgGlaucomascanOn = new Image;
imgGlaucomascanOn.src = "/images/glaucomacheck_over.gif";
imgTermsConditionsOff = new Image;
imgTermsConditionsOff.src = "/images/termsandconditions.gif";
imgTermsConditionsOn = new Image;
imgTermsConditionsOn.src = "/images/termsandconditions_over.gif";

function swapImg(n, h)
{
	document.images[n].src = eval(h + ".src");
}

function MM_showHideLayers()
{ //v2.0
  var i, visStr, args, theObj;
  args = MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) { //with arg triples (objNS,objIE,visStr)
    visStr   = args[i+2];
    if (navigator.appName == 'Netscape' && document.layers != null)
		{
      theObj = eval(args[i]);
      if (theObj) theObj.visibility = visStr;
    } 
		else if (document.all != null) 
		{ //IE
      if (visStr == 'show') visStr = 'visible'; //convert vals
      if (visStr == 'hide') visStr = 'hidden';
      theObj = eval(args[i+1]);
      if (theObj) theObj.style.visibility = visStr;
	  } 
	}
}