//preload images for nav rollovers
var preloadFlag = false;
	if (document.images) {
		nav_1_over = new Image();
    nav_1_over.src = "/graphics/layout/btn_festInfo_rol.gif";
		nav_1_off = new Image();
    nav_1_off.src = "/graphics/layout/btn_festInfo.gif";
		
		nav_2_over = new Image();
    nav_2_over.src = "/graphics/layout/btn_artists_rol.gif";
		nav_2_off = new Image();
    nav_2_off.src = "/graphics/layout/btn_artists.gif";
		
		nav_3_over = new Image();
    nav_3_over.src = "/graphics/layout/btn_stageSchedule_rol.gif";
		nav_3_off = new Image();
    nav_3_off.src = "/graphics/layout/btn_stageSchedule.gif";
		
		nav_4_over = new Image();
    nav_4_over.src = "/graphics/layout/btn_food_rol.gif";
		nav_4_off = new Image();
    nav_4_off.src = "/graphics/layout/btn_food.gif";
		
		nav_5_over = new Image();
    nav_5_over.src = "/graphics/layout/btn_artEducation_rol.gif";
		nav_5_off = new Image();
    nav_5_off.src = "/graphics/layout/btn_artEducation.gif";
		
		nav_6_over = new Image();
    nav_6_over.src = "/graphics/layout/btn_volunteers_rol.gif";
		nav_6_off = new Image();
    nav_6_off.src = "/graphics/layout/btn_volunteers.gif";
		
		nav_7_over = new Image();
    nav_7_over.src = "/graphics/layout/btn_pictures_rol.gif";
		nav_7_off = new Image();
    nav_7_off.src = "/graphics/layout/btn_pictures.gif";
		
		nav_8_over = new Image();
    nav_8_over.src = "/graphics/layout/btn_contactUs_rol.gif";
		nav_8_off = new Image();
    nav_8_off.src = "/graphics/layout/btn_contactUs.gif";
		
		nav_9_over = new Image();
    nav_9_over.src = "/graphics/layout/btn_sponsors_rol.gif";
		nav_9_off = new Image();
    nav_9_off.src = "/graphics/layout/btn_sponsors.gif";
	
	nav_10_over = new Image();
    nav_10_over.src = "/graphics/layout/btn_press_rol.gif";
		nav_10_off = new Image();
    nav_10_off.src = "/graphics/layout/btn_press.gif";
	
	nav_11_over = new Image();
    nav_11_over.src = "/graphics/layout/btn_blog_rol.gif";
		nav_11_off = new Image();
    nav_11_off.src = "/graphics/layout/btn_blog.gif";
		
		preloadFlag = true;
	}

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

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

//set the down state of the current section the client is visiting    
function turnOnImage(which){
        switch(which){
        case 'nav_1':				   
						document.nav_1.src = "/graphics/layout/btn_festInfo_rol.gif";
            nav_1_over.src = "/graphics/layout/btn_festInfo_rol.gif";
            nav_1_off.src = "/graphics/layout/btn_festInfo_rol.gif";
            break;
        case 'nav_2':				   
						document.nav_2.src = "/graphics/layout/btn_artists_rol.gif";
            nav_2_over.src = "/graphics/layout/btn_artists_rol.gif";
            nav_2_off.src = "/graphics/layout/btn_artists_rol.gif";
            break;
        case 'nav_3':				   
						document.nav_3.src = "/graphics/layout/btn_stageSchedule_rol.gif";
            nav_3_over.src = "/graphics/layout/btn_stageSchedule_rol.gif";
            nav_3_off.src = "/graphics/layout/btn_stageSchedule_rol.gif";
            break;    
        case 'nav_4':				   
						document.nav_4.src = "/graphics/layout/btn_food_rol.gif";
            nav_4_over.src = "/graphics/layout/btn_food_rol.gif";
            nav_4_off.src = "/graphics/layout/btn_food_rol.gif";
            break;    
        case 'nav_5':				   
						document.nav_5.src = "/graphics/layout/btn_artEducation_rol.gif";
            nav_5_over.src = "/graphics/layout/btn_artEducation_rol.gif";
            nav_5_off.src = "/graphics/layout/btn_artEducation_rol.gif";
            break;    
        case 'nav_6':				   
						document.nav_6.src = "/graphics/layout/btn_volunteers_rol.gif";
            nav_6_over.src = "/graphics/layout/btn_volunteers_rol.gif";
            nav_6_off.src = "/graphics/layout/btn_volunteers_rol.gif";
            break;    
        case 'nav_7':				   
						document.nav_7.src = "/graphics/layout/btn_pictures_rol.gif";
            nav_7_over.src = "/graphics/layout/btn_pictures_rol.gif";
            nav_7_off.src = "/graphics/layout/btn_pictures_rol.gif";
            break;    
        case 'nav_8':				   
						document.nav_8.src = "/graphics/layout/btn_contactUs_rol.gif";
            nav_8_over.src = "/graphics/layout/btn_contactUs_rol.gif";
            nav_8_off.src = "/graphics/layout/btn_contactUs_rol.gif";
            break;    
        case 'nav_9':				   
						document.nav_9.src = "/graphics/layout/btn_sponsors_rol.gif";
            nav_9_over.src = "/graphics/layout/btn_sponsors_rol.gif";
            nav_9_off.src = "/graphics/layout/btn_sponsors_rol.gif";
            break;
		case 'nav_10':				   
						document.nav_10.src = "/graphics/layout/btn_press_rol.gif";
            nav_10_over.src = "/graphics/layout/btn_press_rol.gif";
            nav_10_off.src = "/graphics/layout/btn_press_rol.gif";
            break;
		case 'nav_11':				   
						document.nav_11.src = "/graphics/layout/btn_blog_rol.gif";
            nav_11_over.src = "/graphics/layout/btn_blog_rol.gif";
            nav_11_off.src = "/graphics/layout/btn_blog_rol.gif";
            break;       
        } 
}