/* Initialize global nav _theme/images */
if (document.images) {
	gSelBlank = new Image(6,6);
	gSelBlank.src = "../_theme/images/nav/bullet_blank.gif";
	gSelected = new Image(6,6);
	gSelected.src = "../_theme/images/nav/bullet_selected.gif";
	gSelTrack = new Image(6,6);
	gSelTrack.src = "../_theme/images/nav/bullet_track.gif";

}

function hideTrack(imgName) {
	if (document.images)
		document[imgName].src = gSelBlank.src;
}

function showTrack(imgName) {
    if (document.images)
		document[imgName].src = gSelTrack.src;
}