/* initialize side navigation images */
var nav = new Array();
var nav_over = new Array();
var nav_bar = new Array();
for (i=0; i<3; i++)
{
	nav[i] = new Image();
	nav_over[i] = new Image();
	nav_bar[i] = new Image();
	nav[i].src = "images/nav" + i + ".gif";
	nav_over[i].src = "images/nav" + i + "_over.gif"; 
	nav_bar[i].src = "images/navBar" + i + ".gif"; 
}

/* navOver */
/* accepts id of image, and loads the 'over' state */
function navOver(i)
{
	var image="nav" + i;
	var x=document.getElementById(image)
	var bar=document.getElementById("navBar")
	x.src=nav_over[i].src;
	bar.src=nav_bar[i].src;
}

/* navOut*/
/* accepts id of image, and loads the default state */
function navOut(i)
{
	var image="nav" + i;
	var x=document.getElementById(image)
	var bar=document.getElementById("navBar")
	x.src=nav[i].src;
	
	navOver(currNav);
}