$(document).ready(function(){
      $("td #id_sessionmode").change(function() {

          if (this.value == 'TRIMP') {
              $("td #id_sessionunit").prop("value","None");
              $('#id_guidance').html("<p>TRIMP has no unit</p>");
          }
          if (this.value == 'distance') {
              $("td #id_sessionunit").prop("value","m");
              $('#id_guidance').html("<p>Distance: Set value to meters</p>");
          }
          if (this.value == 'time') {
              $("td #id_sessionunit").prop("value","min");
              $('#id_guidance').html("<p>Time: Set value to minutes</p>");
          }
          
          if (this.value == 'rScore') {
              $("td #id_sessionunit").prop("value","None");
              $('#id_guidance').html("<p>rScore has no unit</p>");
          }
          
      });
      
      $("td #id_sessiontype").change(function() {
          
          if (this.value == 'session') {
              $("td #id_criterium").prop("value","none");
              $('#id_guidance').html("<p>For Training Sessions, the default criterium is 'Approximately'</p>");
          }
          if (this.value == 'test') {
              $("td #id_criterium").prop("value","exact");
              $("td #id_sessionmode").prop("value","distance");
              $("td #id_sessionunit").prop("value","m");
              $('#id_guidance').html("<p>Set mode to distance. For Mandatory Tests, only distance or time are allowed.</p><p>For Mandatory Tests, the only criterium is 'Exactly'</p>");
          }
          if (this.value == 'challenge') {
              $("td #id_criterium").prop("value","minimum");
              $('#id_guidance').html("<p>For Challenges, the default criterium is 'At Least'</p>");
          }
          
          if (this.value == 'cycletarget') {
              $("td #id_criterium").prop("value","none");
              $('#id_guidance').html("<p>For Cycle Targets, the default criterium is 'Approximately'</p>");
          }
          
      }
                                     
                                    );
      
      $("td #id_sessionunit").change(function() {
          
          if (this.value == 'm') {
              $("td #id_sessionmode").prop("value","distance");
              $('#id_guidance').html("<p>Mode was set to distance</p>");
          }
          if (this.value == 'km') {
              $("td #id_sessionmode").prop("value","distance");
              $('#id_guidance').html("<p>Mode was set to distance</p>");
          }
          if (this.value == 'None') {
              $("td #id_sessionmode").prop("value","rScore");
              $('#id_guidance').html("<p>Mode was set to rScore</p>");
          }
          if (this.value == 'min') {
              $("td #id_sessionmode").prop("value","time");
              $('#id_guidance').html("<p>Mode was set to time</p>");
          }
          
      }
                                     
                                    );  
      
      
      
  });