logoon= new Image();
logoon.src="images/logoR.gif";
logooff= new Image();
logooff.src="images/logo.gif";
nav_multion= new Image();
nav_multion.src="images/nav_multiR.gif";
nav_multioff= new Image();
nav_multioff.src="images/nav_multi.gif";
nav_storieson= new Image();
nav_storieson.src="images/nav_storiesR.gif";
nav_storiesoff= new Image();
nav_storiesoff.src="images/nav_stories.gif";
nav_travelon= new Image();
nav_travelon.src="images/nav_travelR.gif";
nav_traveloff= new Image();
nav_traveloff.src="images/nav_travel.gif";
nav_portraitson= new Image();
nav_portraitson.src="images/nav_portraitsR.gif";
nav_portraitsoff= new Image();
nav_portraitsoff.src="images/nav_portraits.gif";
nav_abouton= new Image();
nav_abouton.src="images/nav_aboutR.gif";
nav_aboutoff= new Image();
nav_aboutoff.src="images/nav_about.gif";
nav_contacton= new Image();
nav_contacton.src="images/nav_contactR.gif";
nav_contactoff= new Image();
nav_contactoff.src="images/nav_contact.gif";

function img_act(imgName,PicName)
   {
    document [PicName].src = eval(imgName + ".src");
   }