// JavaScript Document
	var sPath = window.location.pathname;
	var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
	/* alert(sPage); */
	switch (sPage)
		{
  		case 'projects.php': 
		case 'process.php':
		case 'park-map.php': 
		case 'case-studies.php': 
			menu_offset=7;
            break;
		case 'whats-new.php':
		case 'events.php':
		case 'newsletters.php':
			menu_offset=8;
            break;
		case 'about-us.php': menu_offset=9;
            break;
		case 'learn-more.php': menu_offset=10;
            break;	
		case 'how-to-help.php': 
		case 'volunteer.php': 
		case 'make-a-gift.php':
		case 'partner.php':
		case 'nominate.php':
			menu_offset=11;
            break;
		case 'contact.php': menu_offset=12;
            break;
		default: menu_offset=0;
		}

function display_menu (item) {
	var nav_offset=14;
	bar_height=-82;
	nav_offset=nav_offset + (item*bar_height);
	document.getElementById("nav_block").style.backgroundPosition  = '10px '+ nav_offset + 'px';
	}