function FlashInstalled() {
  var flashinstalled = 0;
  var flashversion = 0;
  MSDetect = false;
  
  if (navigator.plugins && navigator.plugins.length) {
    x = navigator.plugins["Shockwave Flash"];
    if (x) {
      flashinstalled = 2;
      if (x.description) {
        y = x.description;
        flashversion = y.charAt(y.indexOf('.') - 1);
      }
    } else flashinstalled = 1;
    if (navigator.plugins["Shockwave Flash 2.0"]) {
      flashinstalled = 2;
      flashversion = 2;
    }
  } else if (navigator.mimeTypes && navigator.mimeTypes.length) {
    x = navigator.mimeTypes['application/x-shockwave-flash'];
    if (x && x.enabledPlugin) {
      flashinstalled = 2;
    } else {
      flashinstalled = 1;
    }
  } else MSDetect = true;  
  return MSDetect;
}

function DetectFlash() {
  if (!FlashInstalled()) {
    this.document.location.href = "http://www.icm.uh.cz";
  }
}