browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

ns3up = (browserName == "Netscape" && browserVer >= 3);
ie4up = (browserName.indexOf("Microsoft") >= 0 && browserVer >= 4);

function doPic(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic.src = imgOn;
   }
}

function doPic1(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic1.src = imgOn;
   }
}

function doPic2(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic2.src = imgOn;
   }
}

function doPic3(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic3.src = imgOn;
   }
}

function doPic4(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic4.src = imgOn;
   }
}

function doPic5(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic5.src = imgOn;
   }
}

function doPic6(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic6.src = imgOn;
   }
}

function doPic7(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic7.src = imgOn;
   }
}

function doPic8(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic8.src = imgOn;
   }
}

function doPic9(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic9.src = imgOn;
   }
}

function doPic10(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic10.src = imgOn;
   }
}

function doPic11(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic11.src = imgOn;
   }
}

function doPic12(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic12.src = imgOn;
   }
}

function doPic13(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic13.src = imgOn;
   }
}

function doPic14(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic14.src = imgOn;
   }
}

function doPic15(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic15.src = imgOn;
   }
}

function doPic16(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic16.src = imgOn;
   }
}

function doPic17(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic17.src = imgOn;
   }
}
function doPic18(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic18.src = imgOn;
   }
}
function doPic19(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic19.src = imgOn;
   }
}
function doPic20(imgName) {
if (ns3up || ie4up) {
imgOn = ("" + imgName);
document.mainpic20.src = imgOn;
   }
}