Please give me the exact HTML to have this code provide the pop-up
window when the page loads instead of when clicked on - can't figure
it out.

//<![CDATA[

    if (GBrowserIsCompatible()) {

      function createMarker(point,html) {
        // FF 1.5 fix
        html = '<div style="white-space:nowrap;">' + html + '</div>';
        var marker = new GMarker(point);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(html);
        });
        return marker;
      }

      var map = new GMap(document.getElementById("map"));
      map.addControl(new GLargeMapControl());
      map.addControl(new GMapTypeControl());
      map.centerAndZoom(new GPoint(-79.359741, 43.907787), 8);
    
      var point = new GPoint(-79.90138, 43.65654);
      var marker = createMarker(point,'Testing 1234')
      map.addOverlay(marker);

      

    }

    
    else {
      alert("Sorry, the Google Maps API is not compatible with this browser");
    }

    

    //]]>