diff --git a/DependencyChecker.js b/DependencyChecker.js
new file mode 100644
index 0000000..d71450a
--- /dev/null
+++ b/DependencyChecker.js
@@ -0,0 +1,52 @@
+jQuery.fn.isAfter = function(sel){
+  return this.prevAll().filter(sel).length !== 0;
+};
+
+jQuery.fn.isBefore= function(sel){
+  return this.nextAll().filter(sel).length !== 0;
+};
+
+function loadDataJSON(issueKey, callback) {
+
+  //https://docs.atlassian.com/jira/REST/latest/
+  var url = '/rest/api/2/issue/' + issueKey + '?fields=summary,issuelinks';
+  //console.log("IssueUrl: " + window.location.hostname + url);
+  //console.log("Issue: " + issueKey + " Loading...");
+  return  jQuery.ajax({
+    type: 'GET',
+    url: url,
+    dataType: 'json',
+    success: function(responseData){
+      //console.log("Issue: " + issueKey + " Loaded!");
+      callback(responseData);
+    },
+    data: {},
+  });
+}
+
+function checkDependencies(){
+  jQuery('[data-issue-key]').each(function() {
+    var issueElement = jQuery(this);
+    var issueKey = issueElement.attr('data-issue-key');
+    loadDataJSON(issueKey, function(responseData){
+      var issueLinks = responseData.fields.issuelinks;
+      jQuery.each(issueLinks,function(position, issue) {
+        if(issue.type.name == "Blocker" && issue.inwardIssue){
+          var dependencyIssueKey = issue.inwardIssue.key;
+          if (issueElement.isBefore('[data-issue-key='+dependencyIssueKey+']')) {
+            issueElement.find('.ghx-end.ghx-row').find('.ghx-end')
+             .before('<span class="aui-label ghx-label-2 ghx-label ghx-label-double">'+'⚠☟ '+' '+dependencyIssueKey+'</span>')
+
+          }
+        }
+      })
+    })
+  });
+}
+
+checkDependencies();
+
+$( ".js-issue-list" ).change(function() {
+  console.log("##################################");
+  checkDependencies();
+});