function calcHeight() {
                    calFrame = document.getElementById('CalendarIframe');
                    // Set the frame height to the full content height
                    calFrame.height = calFrame.contentWindow.document.body.scrollHeight;

                    // Make all links open in the top window, not the frame.
                    links = calFrame.contentWindow.document.getElementsByTagName('a');
                    for (i=0; i<links.length; i++) {
                      links[i].target='_top';
                    }
                  }