Geeting the relative coordinates of a click

If you want to get the coordinates of a click event relative to the object it happened to, the following event handler works fine on all borwsers provided that the object counts as a layer (offset container). To achieve this, use position:relative or absolute on the object.

funtion(e){
      var mx=0;
      var my=0;
      if(window.event){
        mx=window.event.offsetX;
        my=window.event.offsetY;
      }else{
        mx=e.layerX;
        my=e.layerY;
      }
}

To get the global coordinates, see http://www.quirksmode.org/js/events_properties.html#position