var netbrowser = 0;
var iebrowser = 0;
var useFlash = 0;
var netuseFlash = 0;

if (navigator.appName.indexOf("Netscape") >= 0 || navigator.userAgent.indexOf("Opera") != -1) {
   netbrowser = 1;
}
if (navigator.appName.indexOf("Internet Explorer") >= 0) {
   iebrowser = 1;
}
if (netbrowser) {
    if (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin && navigator.plugins && navigator.plugins["Shockwave Flash"])
   {
      netuseFlash = 1;
   }
}