// preloaders

var roll01 = new Image();
roll01.src = 'images/nav/images/nav_roll_01.png';

var roll02 = new Image();
roll02.src = 'images/nav/images/nav_roll_02.png';

var roll03 = new Image();
roll03.src = 'images/nav/images/nav_roll_03.png';

var roll04 = new Image();
roll04.src = 'images/nav/images/nav_roll_04.png';

var roll05 = new Image();
roll05.src = 'images/nav/images/nav_roll_05.png';

var roll06 = new Image();
roll06.src = 'images/nav/images/nav_roll_06.png';

var roll06 = new Image();
roll06.src = 'images/nav/images/nav_roll_07.png';

var roll07 = new Image();
roll07.src = 'images/nav/images/nav_roll_08.png';

var roll08 = new Image();
roll08.src = 'images/nav/images/nav_roll_09.png';

var roll09 = new Image();
roll09.src = 'images/nav/images/nav_roll_10.png';

//roll ons

function rollOn_01()
	{
	document.getElementById('btn01').src = 'images/nav/images/nav_roll_01.png';
	}
	
function rollOn_02()
	{
	document.getElementById('btn02').src = 'images/nav/images/nav_roll_02.png';
	}
	
function rollOn_03()
	{
	document.getElementById('btn03').src = 'images/nav/images/nav_roll_03.png';
	}
	
function rollOn_04()
	{
	document.getElementById('btn04').src = 'images/nav/images/nav_roll_04.png';
	}
	
function rollOn_05()
	{
	document.getElementById('btn05').src = 'images/nav/images/nav_roll_05.png';
	}
	
function rollOn_06()
	{
	document.getElementById('btn06').src = 'images/nav/images/nav_roll_06.png';
	}
	
function rollOn_07()
	{
	document.getElementById('btn07').src = 'images/nav/images/nav_roll_07.png';
	}
	
function rollOn_08()
	{
	document.getElementById('btn08').src = 'images/nav/images/nav_roll_08.png';
	}
	
function rollOn_09()
	{
	document.getElementById('btn09').src = 'images/nav/images/nav_roll_09.png';
	}
	
function rollOn_10()
	{
	document.getElementById('btn10').src = 'images/nav/images/nav_roll_10.png';
	}
	
// rollouts

function rollOff_01()
	{
	document.getElementById('btn01').src = 'images/nav/images/nav_01.png';
	}
	
function rollOff_02()
	{
	document.getElementById('btn02').src = 'images/nav/images/nav_02.png';
	}
	
function rollOff_03()
	{
	document.getElementById('btn03').src = 'images/nav/images/nav_03.png';
	}
	
function rollOff_04()
	{
	document.getElementById('btn04').src = 'images/nav/images/nav_04.png';
	}
	
function rollOff_05()
	{
	document.getElementById('btn05').src = 'images/nav/images/nav_05.png';
	}
	
function rollOff_06()
	{
	document.getElementById('btn06').src = 'images/nav/images/nav_06.png';
	}
	
function rollOff_07()
	{
	document.getElementById('btn07').src = 'images/nav/images/nav_07.png';
	}
	
function rollOff_08()
	{
	document.getElementById('btn08').src = 'images/nav/images/nav_08.png';
	}
	
function rollOff_09()
	{
	document.getElementById('btn09').src = 'images/nav/images/nav_09.png';
	}
	
function rollOff_10()
	{
	document.getElementById('btn10').src = 'images/nav/images/nav_10.png';
	}