if (document.images) {
            var homeoff = new Image();
            homeoff.src = "images/home.gif";
            var homeon = new Image();
            homeon.src = "images/home_o.gif";
            
             var clientoff = new Image();
            clientoff.src = "images/client.gif";
            var clienton = new Image();
            clienton.src = "images/client_o.gif";
            
             var candidateoff = new Image();
            candidateoff.src = "images/candidate.gif";
            var candidateon = new Image();
            candidateon.src = "images/candidate_o.gif";
            
             var oppsoff = new Image();
            oppsoff.src = "images/opps.gif";
            var oppson = new Image();
            oppson.src = "images/opps_o.gif";
            
             var biooff = new Image();
            biooff.src = "images/bio.gif";
            var bioon = new Image();
            bioon.src = "images/bio_o.gif";
            
             var contactoff = new Image();
            contactoff.src = "images/contact.gif";
            var contacton = new Image();
            contacton.src = "images/contact_o.gif";
            
            
                        
            }

          function act(imgName) {
            if (document.images) 
              document[imgName].src = eval(imgName + "on.src");
          }

          function inact(imgName) {
            if (document.images)
              document[imgName].src = eval(imgName + "off.src");
          }