function preloadImg() {

	if (document.images) {

		p1 = new Image();
		p1.src = "img/info.gif";

	}

}

function showInfoBox() {

	infoBox = document.getElementById('infobox');
	infoBox.style.display = "block";

}

function showInfoBoxDelayed() {

	infoBoxTimerID = setTimeout("showInfoBox()", 500);

}

function hideInfoBox() {

	infoBox = document.getElementById('infobox');
	infoBox.style.display = "none";

}

function hideInfoBoxDelayed() {

	infoBoxTimerID = setTimeout("hideInfoBox()", 500);

}