@SuppressWarnings("unchecked")
private void sessionChangedEventHandler(Session session) {
// clear all scans and add new hosts
this.getPortScanPanel().reset();
SiteNode root = (SiteNode)session.getSiteTree().getRoot();
Enumeration<SiteNode> en = root.children();
while (en.hasMoreElements()) {
String site = en.nextElement().getNodeName();
if (site.indexOf("//") >= 0) {
site = site.substring(site.indexOf("//") + 2);
}