function DetectFireFoxWindowsMediaPlayer()
{
navigator.plugins.refresh(false);

var foundPlugin = false;
var numPlugins = navigator.plugins.length;

for (var i = 0; i < numPlugins; i++)
{
    var plugin = navigator.plugins[i];
    
    if (plugin)
    {
        if (plugin.filename == 'np-mswmp.dll')
        {
            foundPlugin = true;
            return foundPlugin;
        }
        else
        {
            foundPlugin = false;
        }
    }
    else
    {
        foundPlugin = true;
    }
}
return foundPlugin;
}