判断是否安装flash player及当前版本的JS代码

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("您没有安装flash");