function bcmsBrowser(field_name, url, type, win)
{
    var cmsURL = "http://hampshiregymnastics.com/index.php/tinymce_image_add";

    tinyMCE.activeEditor.windowManager.open
    (
      {
          file : cmsURL,
          title : 'Image Upload',
          width : 250,  // Your dimensions may differ - toy around with them!
          height : 120,
          resizable : "yes",
          close_previous : "no"
      },
      {
          window : win,
          input : field_name
      }
    );
    return false;
}