检测flash是否安装及版本号

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>flash检测版本</title>
</head>
<body>
<script type="text/javascript">
    function flashChecker() {
        var hasFlash = 0; //是否安装了flash
        var flashVersion = 0; //flash版本
        var isIE = /*@cc_on!@*/ 0; //是否IE浏览器
        if(isIE) {
            var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
            if(swf) {
                hasFlash = 1;
                flashVersion = swf.GetVariable("$version");
            }
        } else {
            if(navigator.plugins && navigator.plugins.length > 0) {
                var swf = navigator.plugins["Shockwave Flash"];
                if(swf) {
                    hasFlash = 1;
                    flashVersion = swf.description.split(" ");
                }
            }
        }
        return {
            f: hasFlash,
            v: flashVersion
        };
    }

    var fls = flashChecker();
    if(fls.f) document.write("您安装了flash,当前flash版本为: " + fls.v + ".x");
    else document.write("您没有安装flash");

    function getFlashVersion() {
        var flashVer = NaN;
        var ua = navigator.userAgent;

        if(window.ActiveXObject) {
            var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');

            if(swf) {
                flashVer = Number(swf.GetVariable('$version').split(' ')[1].replace(/,/g, '.').replace(/^(d+.d+).*$/, "$1"));
            }
        } else {
            if(navigator.plugins && navigator.plugins.length > 0) {
                var swf = navigator.plugins['Shockwave Flash'];

                if(swf) {
                    var arr = swf.description.split(' ');
                    for(var i = 0, len = arr.length; i < len; i++) {
                        var ver = Number(arr[i]);

                        if(!isNaN(ver)) {
                            flashVer = ver;
                            break;
                        }
                    }
                }
            }
        }
        return flashVer;
    }
    var flashVer = getFlashVersion();
    if(!isNaN(flashVer)) {
        document.write(',,,,,,,当前flash player 的版本：' + flashVer);
    } else {
        document.write('您尚未安装flash播放器');
    }
</script>
</body>

</html>
效果如下：