/********************************************************/
/* THIS JAVASCRIPT BELOW OPENS AND CLOSES THE NAVIGATION*/
/********************************************************/

/*
 * pageSections and pageNavTiers are used to open the navigation to the correct location, based on the file name.
 * e.g.
 * 	page "aboutus-history.php" will open the navigation to "sub1".
 *  page "grantsagency-literacyforlife.php" will open the navigation to "sub3"
 *  If a file name does not begin with any of the values in pageSections, then all navigation is closed.
 */
var pageSections = new Array(
	'index',
	'aboutus', 
	'donorsgift', 
	'grantsagency', 
	'programsprojects', 
	'newsresources', 
	'',
	'familyphilanthropy',
	'youthinphilanthropy',
	'sitemap'
);
var pageNavTiers = new Array(
	'sub9',
	'sub1', 
	'sub2', 
	'sub3', 
	'sub4', 
	'sub5', 
	'sub6', 
	'sub7', 
	'sub8', 
	'sub9' 
);

if (document.getElementById){ 
document.write('<style type="text/css">\n')
document.write('.tiersub{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj){
	// set the 'Current Navigation Position' cookie
	document.cookie="CNP="+obj+"; path=/";

	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("masterdiv").getElementsByTagName("span"); 
		if(el.style.display != "block"){ 
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="tiersub") 
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

// Function to retrieve the value of the navigation cookie.
function getCookie(name) 
{
	var dc = document.cookie;
	var index = dc.indexOf(name + "=");
	if (index == -1) return null;
	index = dc.indexOf("=", index) + 1;
	var endstr = dc.indexOf(";", index);
	if (endstr == -1) endstr = dc.length;
	return unescape(dc.substring(index, endstr));
}

// Function to remember which navigation header was open.
function setNavigation()
{
	var navitem = getCookie("CNP");
	if (navitem > "") SwitchMenu(navitem);
}

// Function to auto-set navigation based on page prefix.
function openNavigation(page) {
	var navObj = 'sub9';
	var x = 0;
	for (x=0; x < pageSections.length; x++) {
		if (page.search(pageSections[x]) > 0) {
			navObj = pageNavTiers[x];
			document.cookie="CNP="+navObj+"; path=/";
		}
	}
}

// call the function to reset the nav bar.
// see the image load at the end of the navigation list (line 131).

/********************************************************/
/* THIS JAVASCRIPT ABOVE OPENS AND CLOSES THE NAVIGATION*/
/********************************************************/