var movieName = "epk";

function thisMovie(movieName) {
	if (navigator.appName.indexOf("Microsoft") != -1) {
	  return window[movieName]
	} else {
	  return document[movieName]
	}
}

function playIt(song) {
   callExternalInterface(song);
}

function callExternalInterface(song) {
   	thisMovie("epk").goHome(song);
}