document.mediaPlayer.fileName = url;

You can get it simply by referring to document.mediaPlayer.fileName. In the plugin Media Player, you can set it as follows:

document.mediaPlayer.SetFileName(url);

and get it:

document.mediaPlayer.GetFileName();

To streamline the integration between the ActiveX control and plugin conventions, we chose to write our own functions for getting and setting properties. In this way, the difference between the browsers is reflected only inside our functions, leaving the overall script quite generic and neat. For example, let's examine the function that sets the media file name, setFileName():

function setFileName(url) {
  if (activeX)
    document.mediaPlayer.fileName = url
  else
    document.mediaPlayer.SetFileName(url);
}

Now, let's examine a get function. Here is the function that gets the showControls flag:

function getShowControls() {
  if (activeX)
    return document.mediaPlayer.showControls;
  else
    return document.mediaPlayer.GetShowControls();
}

You can learn more about multi-browser Media Player programming from Column 53, A Streaming Media JukeBox, Part III: Browser-Independent.

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