function navRollOver(obj, state) {
	document.getElementById(obj).className = (state == 'on') ? 'lnavcat-highlight' : 'lnavcat';
}

function navSelectedRollOver(obj, state) {
	document.getElementById(obj).className = (state == 'on') ? 'lnavcat-highlight' : 'lnavcatselected';
}

function openWindow(URL) {
	popupWin = window.open(URL, 'Image', 'resizable=yes,scrollbars=yes,toolbar=no,menubar=no width=1000,height=800');
	popupWin.focus();
}