{
               toc1on = new Image();
               toc1on.src = "images/contact_on.gif";

               toc2on = new Image();
               toc2on.src = "images/events_on.gif";

               toc3on = new Image();
               toc3on.src = "images/audio_on.gif";

               toc4on = new Image();
               toc4on.src = "images/email_on.gif";

               toc5on = new Image();
               toc5on.src = "images/client_on.gif";

               toc1off = new Image();
               toc1off.src = "images/contact_off.gif";

               toc2off = new Image();
               toc2off.src = "images/events_off.gif";

               toc3off = new Image();
               toc3off.src = "images/audio_off.gif";

               toc4off = new Image();
               toc4off.src = "images/email_off.gif";

               toc5off = new Image();
               toc5off.src = "images/client_off.gif";

               }
      
               function img_act(imgName) {

             {

               document [imgName].src = eval(imgName + "on.src");

               }

       }

               function img_inact(imgName) {

               {

               document [imgName].src = eval(imgName + "off.src");

               }

       }