function openWindow(mypage, w, h, scroll, resizable, menubar, toolbar) {
    var winl = 30;  /* (screen.width - w) / 2; */
    var wint = 30;  /* (screen.height - h) / 2; */
    winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resizable+',menubar='+menubar+',toolbar='+toolbar
    win = window.open(mypage,'',winprops)
}

function openCenteredWindow(mypage, w, h, scroll, resizable, menubar, toolbar) {
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resizable+',menubar='+menubar+',toolbar='+toolbar
    win = window.open(mypage,'',winprops)
}

function showSubList(whichElement) {
	var d = whichElement.parentNode;
	for (var i=0; i < d.childNodes.length; i++) 
	{
		node = d.childNodes[i];
		if (node.nodeName=="UL") 
		{
			if (node.style.display == "block")
				node.style.display = "none";
			else
				node.style.display = "block";
		}
	}
}