function playSound(soundname) {
		 var sound = eval("document." + soundname);

		 // make an effort to stop and rewind any playback
		 // already in progress so that the sound starts over.
		 // Otherwise this call has no effect when the sound
		 // is already in progress. You can remove these lines
		 // if you don't like this behavior.
		 try {
		  sound.Stop();
		  sound.Rewind();
		 } catch (e) {
		  // A player that doesn't support
		  // Stop and Rewind
		 }

		 try {
		  // For RealPlayer-enabled browsers.
		  // Some versions of RealPlayer do not
		  // offer a Play() function and will
		  // fail to play sound if we try to
		  // call Play().
		  sound.DoPlay();
		 } catch (e) {
		  // If DoPlay doesn't work, call Play.
		  // This works for all other audio
		  // plug-ins.
		  sound.Play();
		 }
		}
		function stopSound(soundname) {
		 var sound = eval("document." + soundname);

		 sound.Stop();
		}