function DisplayWindow(strUrl, strWinName, strFeatures) {

	// Ensures visible child windows
	closePopUpWindow();
					
	openedWindow = open(strUrl,strWinName,strFeatures);
	openedWindow.onunload = confirmClosed;
	onunload = closePopUpWindow;
	windowOpen = true;
	return (openedWindow);
}
function closePopUpWindow(){
	// Closes a window's child window
	if (window.windowOpen){
		openedWindow.close();
		confirmClosed();
	}
}
function confirmClosed(){
	// Used to confirm when the child window is closed
	windowOpen = false;
}