function myOpen(url,name) {
	var w=630, h=400, bw, bh, bl, bt, topPos, leftPos;
	if (document.all){
		bw = document.body.clientWidth;
		bh = document.body.clientHeight;
		bl = window.screenLeft;
		bt = window.screenTop;
	} else if (document.layers) {
		bw = window.outerWidth;
		bh = window.outerHeight;
		bl = window.screenX;
		bt = window.screenY;
	}
	leftPos = Math.floor((bw-w)/2) + bl;
	topPos = Math.floor((bh-h)/2) + bt;
	attributes = "width=" + w + ",height=" + h + ",top=" + topPos + ",left=" + leftPos + ",toolbar=no,location=no,status=no,directories=no,menubar=no,scrollbars=yes,resizable=yes";
	window.open (url, name, attributes);
}

function makeVis(divID) {
	var node = document.getElementById(divID);
	if (node.style.visibility=="visible") {
		node.style.visibility = "hidden";
		node.style.display = "none";
		} 
	else {
		node.style.visibility = "visible";
		node.style.display = "block";
	}
}