//shared function
	var defaultMsg = ""
	
	function msgOff(){
	window.status = defaultMsg;
	return true;}
	
// MAIN NAVIGATION
/////////////////

	// create arrays
	var navOn = new Array();
	var navOff = new Array();
		
	// populate arrays with images
	for(i=0;i<5;i++){
	navOn[i] = new Image;
	navOn[i].src = "http://thesimpsons.com/images/navon_"+i+".gif";
	
	navOff[i] = new Image;
	navOff[i].src = "http://thesimpsons.com/images/nav_"+i+".gif";
	}
	
	// create window status array and populate with alt tags
	var navAlt = new Array();
	
	navAlt[0] = "Bios"
	navAlt[1] = "Episode Guide"
	navAlt[2] = "Community"
	navAlt[3] = "Fanfest"
	navAlt[4] = "Store"
			
	// swap image 
	function OnN(i){
	document.images["n"+i].src = navOn[i].src;
	// display message in status bar from alt array
	
	}
	// swap image 
	function OffN(i){
	document.images["n"+i].src = navOff[i].src;
	//display the set default message in status bar
	
	}
	// call this function only to display status message without swapping images	
	function msgOn(i){
	window.status = navAlt[i];
	return true;}
	
	//  NEXT IMAGE ARRAY	
		
	// create arrays
	var bioNavOn = new Array();
	var bioNavOff = new Array();
		
	// populate arrays with images
	for(i=0;i<3;i++){
	bioNavOn[i] = new Image;
	bioNavOn[i].src = "http://thesimpsons.com/bios/images/bionavon_"+i+".gif";
	
	bioNavOff[i] = new Image;
	bioNavOff[i].src = "http://thesimpsons.com/bios/images/bionav_"+i+".gif";
	}
	
	// create window status array and populate with alt tags
	var bioNavAlt = new Array();
	
	bioNavAlt[0] = "Character Bios"
	bioNavAlt[1] = "Creator Bios"
	bioNavAlt[2] = "Actor Bios"
	
	// swap image 
	function OnA(i){
	document.images["A"+i].src = bioNavOn[i].src;
	// display message in status bar from alt array
	
	}
	// swap image 
	function OffA(i){
	document.images["A"+i].src = bioNavOff[i].src;
	//display the set default message in status bar
	
	}
	// call this function only to display status message without swapping images	
	function msgOnA(i){
	window.status = bioNavAlt[i];
	return true;}
	
// BIOS CHARACTER SUBNAV

	// create arrays
	var bioSubNavOn = new Array();
	var bioSubNavOff = new Array();
	
	// populate arrays with images
	for(i=0;i<4;i++){
	bioSubNavOn[i] = new Image;
	bioSubNavOn[i].src = "http://thesimpsons.com/bios/images/biosubnavon_" +i+".gif";
	
	bioSubNavOff[i] = new Image;
	bioSubNavOff[i].src = "http://thesimpsons.com/bios/images/biosubnav_" +i+".gif";
	}
	
	// create window status array and populate with alt tags
	var bioSubNavAlt = new Array();
	
	bioSubNavAlt[0] = "The Simpsons Family"
	bioSubNavAlt[1] = "Guest Stars"
	bioSubNavAlt[2] = "The School"
	bioSubNavAlt[3] = "Townspeople"
	
	
	// swap image 
	function OnB(i){
	document.images["B"+i].src = bioSubNavOn[i].src;
	// display message in status bar from alt array
	}
	// swap image 
	function OffB(i){
	document.images["B"+i].src = bioSubNavOff[i].src;
	//display the set default message in status bar
	}
	// call this function only to display status message without swapping images	
	function msgOnB(i){
	window.status = bioSubNavAlt[i];
	return true;}
	
// BIOS CREATOR SUBNAV

	// create arrays
	var bioCreatOn = new Array();
	var bioCreatOff = new Array();
	
	// populate arrays with images
	for(i=0;i<3;i++){
	bioCreatOn[i] = new Image;
	bioCreatOn[i].src = "http://thesimpsons.com/bios/images/biosubnav_creatorson_" +i+".gif";
	
	bioCreatOff[i] = new Image;
	bioCreatOff[i].src = "http://thesimpsons.com/bios/images/biosubnav_creators_" +i+".gif";
	}
	
	// create window status array and populate with alt tags
	var bioCreatAlt = new Array();
	
	bioCreatAlt[0] = "Matt Groening"
	bioCreatAlt[1] = "James L. Brooks"
	bioCreatAlt[2] = "Al Jean"
	
	
	// swap image 
	function OnC(i){
	document.images["C"+i].src = bioCreatOn[i].src;
	// display message in status bar from alt array
	}
	// swap image 
	function OffC(i){
	document.images["C"+i].src = bioCreatOff[i].src;
	//display the set default message in status bar
	}
	// call this function only to display status message without swapping images	
	function msgOnC(i){
	window.status = bioCreatAlt[i];
	return true;}