// Detect if browser is Netscape 3 + or IE 4 +.
                     browserName = navigator.appName;
                     browserVer = parseInt(navigator.appVersion);
                     if ((browserName == "Netscape" && browserVer >= 3) || 
                     (browserName == "Microsoft Internet Explorer" && browserVer >= 4)) version = "n3"; 
                     else version = "n2";
		     
		      if (version == "n3") {
                      toc1on = new Image();
                      toc1on.src = "img/aegis_advantage_over.gif";
                      toc2on = new Image();
                      toc2on.src = "img/employer_services_over.gif";
                      toc3on = new Image();
                      toc3on.src = "img/areas_of_placement_over.gif";
                      toc4on = new Image();
                      toc4on.src = "img/career_over.gif";
                      toc5on = new Image();
                      toc5on.src = "img/philosophy_over.gif";               
		          toc6on = new Image();
                      toc6on.src = "img/contact_over.gif";
                      toc7on = new Image();
                      toc7on.src = "img/join_our_team_over.gif";
                      toc8on = new Image();
                      toc8on.src = "img/testimonials_over.gif";
                      toc9on = new Image();
                      toc9on.src = "img/home_over.gif";


  
                      toc1off = new Image();
                      toc1off.src = "img/aegis_advantage.gif";
                      toc2off = new Image();
                      toc2off.src = "img/employer_services.gif";
                      toc3off = new Image();
                      toc3off.src = "img/areas_of_placement.gif";
                      toc4off = new Image();
                      toc4off.src = "img/career.gif";
                      toc5off = new Image();
                      toc5off.src = "img/philosophy.gif";
		          toc6off = new Image();
                      toc6off.src = "img/contact.gif";
		          toc7off = new Image();
                      toc7off.src = "img/join_our_team.gif";
		          toc8off = new Image();
                      toc8off.src = "img/testimonials.gif";
		          toc9off = new Image();
                      toc9off.src = "img/home.gif";


                      
                      }
              function img_act(imgName) {
                      if (version == "n3") {
                      imgOn = eval(imgName + "on.src");
                      document [imgName].src = imgOn;
                      }
              }
              function img_inact(imgName) {
                      if (version == "n3") {
                      imgOff = eval(imgName + "off.src");
                      document [imgName].src = imgOff;
                      }
              }