function getfav(obj) {
  var poststr = "video_id=" + encodeURI( document.getElementById("video_id").value ) +
				"&user_id=" + encodeURI( document.getElementById("user_id").value );
  makePOSTRequest(''+jaanURL+'/ajax_favorite.php', poststr);
}
function getfavSoundtracks(obj) {
  var poststr = "video_id=" + encodeURI( document.getElementById("video_id").value ) +
				"&user_id=" + encodeURI( document.getElementById("user_id").value );
  makePOSTRequest(''+jaanURL+'/ajax_favorite_soundtracks.php', poststr);
}