nav_over1=new Image();
nav_over1.src="images/nav_over_01.jpg";		
nav_over2=new Image();
nav_over2.src="images/nav_over_02.jpg";		
nav_over3=new Image();
nav_over3.src="images/nav_over_03.jpg";		
nav_over4=new Image();
nav_over4.src="images/nav_over_04.jpg";		
nav_over5=new Image();
nav_over5.src="images/nav_over_05.jpg";	

function btnRollOver (btnNum)
{
	document.getElementById('btn'+btnNum).className='btn_over'+btnNum;
}
function btnRollOut (btnNum)
{
	document.getElementById('btn'+btnNum).className='btn_out'+btnNum;
}
function pageSwap (newPageNum, totalPages)
{	
	for (var i=1; i<=totalPages; i++)
	{
		document.getElementById('subPage'+i).className='subPageHide';	
	}
	
	document.getElementById('subPage'+newPageNum).className='subPageShow';	
}