//nav image swap
function navSwap(nav, img)
{
	document.getElementById(nav).src = "images/" + img + ".png";
}

// app and demo popup
function popUp(URL) 
{
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=800,height=570,left = 176,top = 147');");
}