window.onload = init;

function init() {
	var tn1 = document.getElementById('tn1');
	var tn2 = document.getElementById('tn2');
	var tn3 = document.getElementById('tn3');
	var tn4 = document.getElementById('tn4');
	var tn5 = document.getElementById('tn5');
	var tn6 = document.getElementById('tn6');
	var tn7 = document.getElementById('tn7');
	var tn8 = document.getElementById('tn8');


	
	var pageid = document.getElementsByTagName('body');
	
	tn1.onmouseover = function() {
		tn1.src = "images/nav/1b.jpg";
	}
	tn1.onmouseout = function() {
		tn1.src = "images/nav/1.jpg";
	}
	
	tn2.onmouseover = function() {
		tn2.src = "images/nav/2b.jpg";
	}
	tn2.onmouseout = function() {
		tn2.src = "images/nav/2.jpg";
	}
	
	tn3.onmouseover = function() {
		tn3.src = "images/nav/3b.jpg";
	}
	tn3.onmouseout = function() {
		tn3.src = "images/nav/3.jpg";
	}
	
	tn4.onmouseover = function() {
		tn4.src = "images/nav/4b.jpg";
	}
	tn4.onmouseout = function() {
		tn4.src = "images/nav/4.jpg";
	}
		
	tn5.onmouseover = function() {
		tn5.src = "images/nav/5b.jpg";
	}
	tn5.onmouseout = function() {
		tn5.src = "images/nav/5.jpg";
	}
	
	tn6.onmouseover = function() {
		tn6.src = "images/nav/6b.jpg";
	}
	tn6.onmouseout = function() {
		tn6.src = "images/nav/6.jpg";
	}

    tn7.onmouseover = function() {
		tn7.src = "images/nav/7b.jpg";
	}
	tn7.onmouseout = function() {
		tn7.src = "images/nav/7.jpg";
	}

    tn8.onmouseover = function() {
		tn8.src = "images/nav/8b.jpg";
	}
	tn8.onmouseout = function() {
		tn8.src = "images/nav/8.jpg";
	}