//=======================================================

	 //server location
	var site_root = '/arthur/';
	
	//=======================================================
	
		activities_roll = new Image();           
		activities_roll.src = site_root + "parentsteachers/images/PT_nav_activities_roll.gif";  
		books_roll = new Image(); 
		books_roll.src = site_root + "parentsteachers/images/PT_nav_books_roll.gif";  
		contact_roll = new Image(); 
		contact_roll.src = site_root + "parentsteachers/images/PT_nav_contact_roll.gif";  
		events_roll = new Image(); 
		events_roll.src = site_root + "parentsteachers/images/PT_nav_events_roll.gif";  
		help_roll = new Image(); 
		help_roll.src = site_root + "parentsteachers/images/PT_nav_help_roll.gif";  
		lesson_roll = new Image(); 
		lesson_roll.src = site_root + "parentsteachers/images/PT_nav_lesson_roll.gif";  
		program_roll = new Image(); 
		program_roll.src = site_root + "parentsteachers/images/PT_nav_program_roll.gif";  
		resources_roll = new Image(); 
		resources_roll.src = site_root + "parentsteachers/images/PT_nav_resources_roll.gif";  		
		site_roll = new Image(); 
		site_roll.src = site_root + "parentsteachers/images/PT_nav_site_roll.gif";  		
		schedule_roll = new Image(); 
		schedule_roll.src = site_root + "parentsteachers/images/PT_nav_schedule_roll.gif";  		
		home_roll = new Image(); 
		home_roll.src = site_root + "images/lnav/nav_home_roll.gif";  		

		activities = new Image();           
		activities.src = site_root + "parentsteachers/images/PT_nav_activities.gif";  
		books = new Image(); 
		books.src = site_root + "parentsteachers/images/PT_nav_books.gif";  
		contact = new Image(); 
		contact.src = site_root + "parentsteachers/images/PT_nav_contact.gif";  
		events = new Image(); 
		events.src = site_root + "parentsteachers/images/PT_nav_events.gif";  
		help = new Image(); 
		help.src = site_root + "parentsteachers/images/PT_nav_help.gif";  
		lesson = new Image(); 
		lesson.src = site_root + "parentsteachers/images/PT_nav_lesson.gif";  
		program = new Image(); 
		program.src = site_root + "parentsteachers/images/PT_nav_program.gif";  
		resources = new Image(); 
		resources.src = site_root + "parentsteachers/images/PT_nav_resources.gif";  		
		site = new Image(); 
		site.src = site_root + "parentsteachers/images/PT_nav_site.gif";  		
		schedule = new Image(); 
		schedule.src = site_root + "parentsteachers/images/PT_nav_schedule.gif";  	
		home = new Image(); 
		home.src = site_root + "images/lnav/nav_home.gif";  		
			

		function imgOn(imgName) {
		        if (document.images) {
		            document[imgName].src = eval(imgName + "_roll.src");
		        }
		}

		function imgOff(imgName) {
		        if (document.images) {
		            document[imgName].src = eval(imgName + ".src");
		        }
		}