JavaScript code to detect whether ActiveX control has been installed_javascript skills

function detectPlugin(CLSID,functionName)
{
var pluginDiv = document.createElement("

")
document.body.insertBefore(pluginDiv);
pluginDiv.innerHTML = ' ';
try
{
if(eval("objectForDetectPlugin." functionName) == undefined)
{
pluginDiv.removeNode(true);//Delete pluginDiv and all its child elements
return false;
}
else
{
pluginDiv.removeNode(true);//Remove pluginDiv and all its child elements
return true ;
}
}
catch(e)
{
return false;
}
}