function NavDown(btn) {
	$(btn).src='images/NavDn'+ btn + '.jpg'
}

function NavUp(btn) {
	$(btn).src='images/NavUp'+ btn + '.jpg'
}

function openNavItem(i) {
	var newWind = window.open(i,"itemwindow","resizable,scrollbars,height=730,width=815");
}

function openNavItemSmall(i) {
	var newWind = window.open(i,"itemwindow","resizable,scrollbars,height=640,width=640");
}