Re: Create a button that call a function, in this case a "Distance Calculator"

[[EMAIL PROTECTED]]

Thanks for your reply , i try with <input type="button"
value="Calculate Distance"
onclick="calculateDistance();" />    and have the error "Object
Expected" , this is the code to generate the "distance calculator" ,
Please let me now how solved this? Thanks in advanced. ,

  var points = [];
  var polyline = null;
  var endMarker = null;
  var distance = 0;
  var listener = null;
  var start_icon = new GIcon(G_DEFAULT_ICON, 'http://maps.google.com/
mapfiles/dd-start.png');
  var end_icon = new GIcon(G_DEFAULT_ICON, 'http://maps.google.com/
mapfiles/dd-end.png');
  listener = GEvent.addListener(mmap, 'click', function(target, point)
{
    if (point) {
      if (polyline) {
        updateEnd(point);
        mmap.removeOverlay(polyline);
        distance += points[points.length-1].distanceFrom(point);
        var result = distance;
        result = Math.round(result*100)/100;
        $("Result").innerHTML = "Distancia total:  " + result + "
metros";
      } else {
        addStart(point);
      }
      points.push(point);
      polyline = new GPolyline(points, "#0000ff", 4);
      mmap.addOverlay(polyline);
    }
  });
  function addStart(point) {
    var markerId = 'start';
    var marker = new GMarker(point, {
      icon: start_icon
    });
    marker.markerId = markerId;
    mmap.addOverlay(marker);
  }
  function updateEnd(point) {
    if (!endMarker) {
      endMarker = new GMarker(point, {
        icon: end_icon
      });
      endMarker.markerId = 'end';
      mmap.addOverlay(endMarker);
    }
    endMarker.setPoint(point);
  }
  function restart() {
    mmap.clearOverlays();
    points = [];
    polyline = null;
    endMarker = null;
    distance = 0;
    $("Result").innerHTML = "";
  }
  function $(id) {
    return document.getElementById(id);
  }
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