// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
//
// ************************
// layer utility routines *
// ************************

function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
  	styleObject.visibility = newVisibility;
	return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility


function ShowMenu(who)
{
    var menuId = 'passenger' + who;
    if(changeObjectVisibility(menuId, 'visible')) {
	return true;
    } else {
	return false;
    }
}

function HideMenu(who)
{
 var id="passenger"+who;
 changeObjectVisibility(id, 'hidden');
 
}


var ids = new Array (1, 2, 3, 4, 5, 6, 7, 8);
var idSunsorted = new Array (1, 2, 3, 4, 5, 6, 7, 8);

var tmsubmenus;

function hideAllMenus() {
    for(counter = 0; counter < ids.length; counter++) {
	changeObjectVisibility('passenger' + ids[counter], 'hidden');
    }
}