function openDC(itemid) {
	changeDiscoveryDiv(itemid + '_on','block');
	changeDiscoveryDiv(itemid + '_off','none');
}

function closeDC(itemid) {
	changeDiscoveryDiv(itemid + '_on','none');
	changeDiscoveryDiv(itemid + '_off','block');
}

function changeDiscoveryDiv(the_div,the_change) {
	if ((document.getElementById) || (document.all)) {
		var the_style = getDiscoveryStyleObject(the_div);
		if (the_style != false) {
			the_style.display = the_change;
		}
	}
}

function getDiscoveryStyleObject(objectId) {
	if (document.getElementById && document.getElementById(objectId)) {
		return document.getElementById(objectId).style;
	} else if (document.all && document.all(objectId)) {
		return document.all(objectId).style;
	} else {
		return false;
	}
}