browseName = navigator.appName;
                     browseVer = parseInt(navigator.appVersion);
                     
                 if ((browseName == "Netscape" && browseVer >= 3) || (browseName != "Netscape" && browseVer >=4))
                     {
                     rr36_off = new Image(126,36);
                     rr36_off.src = 'rr3_2x2.gif';
                     rr36_on = new Image(126,36);
                     rr36_on.src = 'rr3_2x2hi.gif';

                     rr38_off = new Image(113,39);
                     rr38_off.src = 'rr3_2x4.gif';
                     rr38_on = new Image(113,39);
                     rr38_on.src = 'rr3_2x4hi.gif';

                     rr315_off = new Image(141,76);
                     rr315_off.src = 'rr3_5x3.gif';
                     rr315_on = new Image(141,76);
                     rr315_on.src = 'rr3_5x3hi.gif';

                     rr324_off = new Image(137,34);
                     rr324_off.src = 'rr3_7x1.gif';
                     rr324_on = new Image(137,34);
                     rr324_on.src = 'rr3_7x1hi.gif';

                     rr326_off = new Image(113,39);
                     rr326_off.src = 'rr3_8x2.gif';
                     rr326_on = new Image(113,39);
                     rr326_on.src = 'rr3_8x2hi.gif';              
                     }

                 function actImg(imgName)
                     {
                      if ((browseName == "Netscape" && browseVer >= 3) || (browseName != "Netscape" && browseVer >=4))
                          {
                        imgOn = eval(imgName + '_on.src');
                        document [imgName].src = imgOn;
                          }
                     }

                 function inactImg(imgName)
                     {
                      if ((browseName == "Netscape" && browseVer >= 3) || (browseName != "Netscape" && browseVer >=4))
                          {
                        imgOff = eval(imgName + '_off.src');
                        document [imgName].src = imgOff;
                          }
                     }