listingSlideFX = new Array();
listingViewed = new Array();
function expandListing(ListID) {
    if (ListID) {
	$('Listing_' + ListID).setStyle('display', "block");

	if (!listingViewed.contains(ListID)) {
	    listingViewed.push(ListID);
	}

	if ($defined(listingSlideFX[ListID])) {
	    listingSlideFX[ListID].toggle();
	} else {
	    listingSlideFX[ListID] = new Fx.Slide('Listing_' + ListID);
	    listingSlideFX[ListID].hide();
	    listingSlideFX[ListID].toggle();
	}
    }
}