anchor.diff:  
     _toggleAnalysis: function() {
       if (this.model.get('analyzing')) {
  +      ga('send', 'event', 'Analysis', 'Start', (config.ISO && config.ISO !== 'ALL') ? config.ISO : '');
  +
         LayerSelector.hide();
         Legend.hide();
         SearchBox.hide();
  
positive.code:       range = this.range || '&begin=2000&end=2013';
      }
  
      
      if (config.ISO === 'ALL' || this.protectedArea) {
        this.alertsUrl = url+dataset+'?geom='+encodeURI(area)+range;
        this.downloadUrl = url+dataset+'.shp?geom='+encodeURI(area)+range;
  
negative.code:         });
        }, this),
        error: _.bind(function(error) {
          ga('send', 'event', 'Analysis', 'Error', (config.ISO && config.ISO !== 'ALL') ? config.ISO : '');
  
          this.$el.find('.stats .title, .stats ul, .stats .spinner').fadeOut(150, function() {
            that.$el.find('.error').fadeIn(250);
          });
  