$(document).ready(function(){
  $("#indicator-popup").dialog({
     autoOpen: false,
     bgiframe: true,
     width: 900,
     height: 900,
     title: 'Indicators',
  });
  $(".indicator_image > img").click(function() {
    $('#indicator-popup').html("<p><img src='" + this.title + "'/></p>");
    $('#indicator-popup').dialog('option', 'title', this.alt);
    $('#indicator-popup').dialog('open');
  });
});