var boxOver = new Image();
boxOver.src = "images/graphic/box_over.gif";

var boxOut = new Image();
boxOut.src = "images/graphic/box_out.gif";

var subnavOver = new Image();
subnavOver.src = "images/graphic/subnav_act.gif";

var subnavOut = new Image();
subnavOut.src = "images/graphic/subnav.gif";

function imgOver(imgName)
{
	document.images[imgName].src = boxOver.src;
}

function imgOut(imgName)
{
	document.images[imgName].src = boxOut.src;
}

function subOver(imgName)
{
	document.images[imgName].src = subnavOver.src;
}

function subOut(imgName)
{
	document.images[imgName].src = subnavOut.src;
}

function openBig(url)
{
	myPopWin = window.open(url ,null, "height=500,width=660,status=no,toolbar=no,menubar=no,location=no, resizable=yes");
	myPopWin.focus();
}