// preloadimages 

	retailhomeon =  new Image();
	retailhomeon.src = "images/retailhomeon.gif";
	retailhomeoff = new Image();
	retailhomeoff.src = "images/retailhomeoff.gif";

	retailabouton = new Image();
	retailabouton.src = "images/retailabouton.gif";						
	retailaboutoff = new Image();
	retailaboutoff.src = "images/retailaboutoff.gif";

	retailcontacton = new Image();
	retailcontacton.src = "images/retailcontacton.gif";	
	retailcontactoff = new Image();
	retailcontactoff.src = "images/retailcontactoff.gif";

	retailopticalon = new Image();
	retailopticalon.src = "images/retailopticalon.gif";						
	retailopticaloff = new Image();
	retailopticaloff.src = "images/retailopticaloff.gif";

	retailretailon = new Image();
	retailretailon.src = "images/retailretailon.gif";	
	retailretailoff = new Image();
	retailretailoff.src = "images/retailretailoff.gif";	

	opticalon = new Image();
	opticalon.src = "images/opticalon.gif";	
	opticaloff = new Image();
	opticaloff.src = "images/opticaloff.gif";	

	trainingon = new Image();
	trainingon.src = "images/trainingon.gif";	
	trainingoff = new Image();
	trainingoff.src = "images/trainingoff.gif";

	retailon = new Image();
	retailon.src = "images/retailon.gif";	
	retailoff = new Image();
	retailoff.src = "images/retailoff.gif";
	
	// function to do rollovers on images
	function swapImage(num){
		if (num=="1") document.images ['retailhome'].src = retailhomeon.src;
		else if (num=="2") document.images ['retailhome'].src = retailhomeoff.src;				
		else if (num=="3") document.images ['retailabout'].src = retailabouton.src;	
		else if (num=="4") document.images ['retailabout'].src = retailaboutoff.src;	
		else if (num=="5") document.images ['retailcontact'].src = retailcontacton.src;
		else if (num=="6") document.images ['retailcontact'].src = retailcontactoff.src;				
		else if (num=="7") document.images ['optical'].src = opticalon.src;	
		else if (num=="8") document.images ['optical'].src = opticaloff.src;		
		else if (num=="9") document.images ['training'].src = trainingon.src;
		else if (num=="10") document.images ['training'].src = trainingoff.src;
		else if (num=="11") document.images ['retail'].src = retailon.src;	
		else if (num=="12") document.images ['retail'].src = retailoff.src;
		else if (num=="13") document.images ['retailoptical'].src = retailopticalon.src;	
		else if (num=="14") document.images ['retailoptical'].src = retailopticaloff.src;	
		else if (num=="15") document.images ['retailretail'].src = retailretailon.src;
		else if (num=="16") document.images ['retailretail'].src = retailretailoff.src;
	}