window.onload = initialize; 

function initialize () {
	var x = document.getElementsByTagName('a');
	for (var i=0;i<x.length;i++) {
		if (x[i].getAttribute('class') == 'infoBox') {
			x[i].onclick = function () {
				return openInfoBox(this.href)
			}
			x[i].title += ' (Popup)';
		}
	}
}

var infoBox = null;

function openInfoBox(url) {
	if (infoBox && !infoBox.closed) {
		infoBox.location.href = url;
	} else {
		infoBox = window.open(url,'infoBox','height=400,width=520,scrollbars=yes,resizable=yes');
	}
	infoBox.focus();
	return false;
}