function HideMenuItem(_MenuItemName) {
	var objMenuItem = document.getElementById(_MenuItemName);
	objMenuItem.style.display = "none";
}

function HideAllMenuItems() {
	var strMenuItemNames = new Array("mnuAboutHKGISA", "mnuMembership", "mnuActivities", "mnuRelatedLinks", "mnuMemberArea");
	
	for (var i in strMenuItemNames) {
		HideMenuItem(strMenuItemNames[i]);
	}
}

function ToggleMenuItem(_MenuItemName) {
	var objMenuItem = document.getElementById(_MenuItemName);
	var strState = objMenuItem.style.display;

	HideAllMenuItems();	
	
	// if (objMenuItem.style.display == "block") {
	if (strState == "block") {
		objMenuItem.style.display = "none";
	}
	else {
		objMenuItem.style.display = "block";
	}
}