// top navigation for the portwine index.php.
if(document.images) {

	nav0On = new Image();
	nav0On.src = "images/jp_roll_02.jpg";
	nav0Off = new Image();
	nav0Off.src = "images/jp_02.jpg";
	
	nav1On = new Image();
	nav1On.src = "images/jp_roll_03.jpg";
	nav1Off = new Image();
	nav1Off.src = "images/jp_03.jpg";
	
	nav2On = new Image();
	nav2On.src = "images/jp_roll_04.jpg";
	nav2Off = new Image();
	nav2Off.src = "images/jp_04.jpg";
	
	nav3On = new Image();
	nav3On.src = "images/jp_roll_05.jpg";
	nav3Off = new Image();
	nav3Off.src = "images/jp_05.jpg";
	
	nav4On = new Image();
	nav4On.src = "images/jp_roll_06.jpg";
	nav4Off = new Image();
	nav4Off.src = "images/jp_06.jpg";
	
	nav5On = new Image();
	nav5On.src = "images/jp_roll_07.jpg";
	nav5Off = new Image();
	nav5Off.src = "images/jp_07.jpg";
	
	nav6On = new Image();
	nav6On.src = "images/jp_roll_08.jpg";
	nav6Off = new Image();
	nav6Off.src = "images/jp_08.jpg";
	
	nav7On = new Image();
	nav7On.src = "images/jp_roll_09.jpg";
	nav7Off = new Image();
	nav7Off.src = "images/jp_09.jpg";
	
	nav8On = new Image();
	nav8On.src = "images/jp_roll_10.jpg";
	nav8Off = new Image();
	nav8Off.src = "images/jp_10.jpg";
	
	nav9On = new Image();
	nav9On.src = "images/bookings_email_roll.gif";
	nav9Off = new Image();
	nav9Off.src = "images/bookings_email_up.gif";
	
	nav10On = new Image();
	nav10On.src = "images/sonicbids_presskit_roll.gif";
	nav10Off = new Image();
	nav10Off.src = "images/sonicbids_presskit_up.gif";
	
	nav11On = new Image();
	nav11On.src = "images/facebook_roll.gif";
	nav11Off = new Image();
	nav11Off.src = "images/facebook_up.gif";
	
	nav12On = new Image();
	nav12On.src = "images/myspace_roll.gif";
	nav12Off = new Image();
	nav12Off.src = "images/myspace_up.gif";
	
	nav13On = new Image();
	nav13On.src = "images/daydreamphoto_roll.gif";
	nav13Off = new Image();
	nav13Off.src = "images/daydreamphoto_up.gif";
	
	nav14On = new Image();
	nav14On.src = "images/holidayprint_roll.gif";
	nav14Off = new Image();
	nav14Off.src = "images/holidayprint_up.gif";
	
	nav15On = new Image();
	nav15On.src = "images/info_email_roll.gif";
	nav15Off = new Image();
	nav15Off.src = "images/info_email_up.gif";
	
	nav16On = new Image();
	nav16On.src = "images/jp_roll_11.jpg";
	nav16Off = new Image();
	nav16Off.src = "images/jp_11.jpg";
	
}

// functions for swapping the respective images. 
function nav_on(image_name) {
	if (document.images){
		document[image_name].src = eval(image_name + "On.src");
	}
}

function nav_off(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "Off.src");
	}
}