var currentlyOpenToolTip = null;

function ShowAdditionalInfo(targetId, eventObj) {
	var target = document.getElementById(targetId);
	if(!target) {
		return false;
	}
	
	if (currentlyOpenToolTip) {		
		HideAdditionalInfo(target.id);
		if(currentlyOpenToolTip == target) {
			currentlyOpenToolTip = null;
			return;
		}		
	}
	target.style.display = "block";	
	currentlyOpenToolTip = target;
}

function HideAdditionalInfo(targetId) {
	if(document.getElementById(targetId)) {		
		document.getElementById(targetId).style.display = "none";
	}
}