hide or show a zendesk widget in the side bar based on a tag in the forum topic

hide-widget.css

/* you can get the widget ID/Number from the widget edit page in the sidebar */

div#widget_189206 {
  display: none;
}

show-widget-based-on-tag.js

$j(document).ready(function() {  
   //check to see if you are on the end users request page
   if (window.location.href.indexOf('entries') >= 0){

$j.getJSON(window.location.href+".json", function(data) {
    if(data['current_tags'] === 'gist'){
     $j('div#widget_189206').show();
       }
    });
   }
});

show-widget-regex-tags.js

var V4Attempts = 0;
var V5Attempts = 0;
$j(document).ready(function() {  
  if(window.location.href.indexOf('entries') >= 0)
  {
    $j.getJSON(window.location.href+".json", function(data) 
    {
      if(/version4/i.test(data['current_tags']))
        showV4();
      if(/version5/i.test(data['current_tags']))
        showV5();
    });
  }
});

function showV4()
{
  V4Attempts += 1;
  if($j('div#widget_253811').length)
  {
    $j('div#widget_253811').show();
  }
  else
  {
    if(V4Attempts < 50)
      window.setTimeout(showV4, 100);
  }
}

function showV5()
{
  V5Attempts += 1;
  if($j('div#widget_256933').length)
  {
    $j('div#widget_256933').show();
  }
  else
  {
    if(V5Attempts < 50)
      window.setTimeout(showV5, 100);
  }
}