js 检测flash 版本

  function flashChecker() {     var hasFlash = 0; //是否安装了flash  var flashVersion = 0; //flash版本  if (document.all) {  var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');  if (swf) {  hasFlash = 1;  VSwf = swf.GetVariable("$version");  flashVersion = parseInt(VSwf.split(" ")[1].split(",")[0]);  }  } else {  if (navigator.plugins && navigator.plugins.length > 0) {  var swf = navigator.plugins["Shockwave Flash"];  if (swf) {  hasFlash = 1;  var words = swf.description.split(" ");  for (var i = 0; i < words.length; ++i) {  if (isNaN(parseInt(words[i]))) continue;  flashVersion = parseInt(words[i]);  }  }  }  }  return { f: hasFlash, v: flashVersion };  }  var fls = flashChecker();  var s = "";  if (fls.f) document.write("您安装了flash,当前flash版本为: " + fls.v + ".x");  else document.write("没有安装f您lash");