var callerID = null;
var currentModal = null;
var thisModal = null;

function HideModal() {
	var opaqueDiv = document.getElementById('opaqueLayer');
	var modalDiv = document.getElementById(thisModal);
	
	opaqueDiv.style.visibility = 'hidden';
	opaqueDiv.innerHTML = '';
	modalDiv.style.display = 'none';
	
	if(currentModal) currentModal = null;
}

function ShowModal(overlayStyle,contentId,callerId,closeID) {
	callerID = callerId;

	var opaqueDiv = document.getElementById('opaqueLayer');
	var modalDiv = document.getElementById(contentId);
	
	if(currentModal) currentModal.style.display = 'none'; 
	currentModal = modalDiv;

	var overlayColor = '';
	var overlayBorder = '';
	if(overlayStyle == 'black'){ overlayColor = "#000000"; overlayBorder = "#000000"; }
	else if(overlayStyle == 'white'){ overlayColor = "#FFFFFF"; overlayBorder = "#999999"; }

	opaqueDiv.style.backgroundColor = overlayColor;
	modalDiv.style.border = '3px solid '+overlayBorder;
	
	opaqueDiv.style.visibility = 'visible';
	modalDiv.style.display = 'inline';
	
	thisModal = contentId;
}