Adding panel,excerpt,warning,note,tip or info macro to the page in edit mode will trigger mixed content action in browser

<script type="text/javascript">
  function fixFrameContent(frameContent, broken_url_prefix) {
    var replaced = false;
    // Replace broken img src urls
    frameContent.find("img").each(function(index) {
      var srcUrl = AJS.$(this).attr("src");
      if (srcUrl.toLowerCase().startsWith(broken_url_prefix)) {
        var srcNewUrl = srcUrl.substring(broken_url_prefix.length);
        AJS.$(this).attr("src", srcNewUrl);
        replaced=true;
      };
    });  // each img
     
    // Replace broken tables for macro - background img url is broken
    // Iterate over all relevant tables to check background-image URL
    frameContent.find("table.wysiwyg-macro").each(function(index) {
      AJS.log(AJS.$(this));
      var bgiRaw = AJS.$(this).css("background-image");
      if (!bgiRaw) return true;  // nothing to do, continue with next element
      // remove 'url(...)' around the content
      var bgiUrlMatch = bgiRaw.match(/url\(["']?(.*)["']?\)/);
      if (!bgiUrlMatch) return true;  // nothing to do, continue with next element
      var bgiUrl = bgiUrlMatch[1];
      if (bgiUrl.toLowerCase().startsWith(broken_url_prefix)) {
        // Remove broken URL, use relative path!
        var bgiNewUrl = bgiUrl.substring(broken_url_prefix.length);
        AJS.$(this).css("background-image", "url('"+bgiNewUrl+"')");
      }
      replaced = true;
    }); // each macro in iframe   
  };
 
  AJS.toInit(function() {
    if (navigator.userAgent.indexOf("Trident/")>-1) {
      AJS.log("Fixing broken macro title - Internet Explorer - fix not required");
      return;
    }
    // Get Base URL
    var broken_url_prefix = Confluence.getBaseUrl().toLowerCase();
    // Replace https with http
    if (!broken_url_prefix.startsWith("https")) {
      AJS.log("Fixing broken macro title - no https base URL "+broken_url_prefix);
      return;
    }
    // Remove https and add http
    broken_url_prefix = "http" + broken_url_prefix.substring(5);
    AJS.log("Fixing broken macro title - fixing URL prefix "+broken_url_prefix);
 
    // Bind to rich text editor event, triggered when edit button is pressed
    AJS.bind("init.rte", function() {   
      AJS.$(document).bind('postPaste', function(e, pl, o) {
        // iframe is not filled when postPaste occurs, so wait and retry a few times
        var copyPasteRetry = 5;
        var pasteRetryHandle = setInterval(function() {
          copyPasteRetry--;
          if(copyPasteRetry<=0) {
            clearInterval(pasteRetryHandle);
            return;          
          };
          // Find out what is being pasted
          var $pasted = $(o.node);
          // Get iframe containing the editor HTML, including the relevant macro tables
          var frameContent = AJS.$("#wysiwygTextarea_ifr").contents();
          // Search editor content for broken links
          replaced = fixFrameContent(frameContent, broken_url_prefix);
          // Stop polling in after a complete next iteration if at least one macro was fixed
          if (replaced && copyPasteRetry>2) copyPasteRetry=2;
        }, 500); // retry interval 500ms
      }); // bind postPaste
         
      var counter = 10;
      var replaced = false;
 
      // iframe is not filled when RTE event occurs
      // (Re-)start polling, found no event to wait until editor iframe is filled
      // and onLoad does not work.
      var timerHandle = setInterval(function() {
        // Stop polling when counter reaches zero
        counter--;
        if (counter<=0) {
          clearInterval(timerHandle);
          return;
        }
        // Get iframe containing the editor HTML, including the relevant macro tables
        var frameContent = AJS.$("#wysiwygTextarea_ifr").contents();
        replaced = fixFrameContent(frameContent, broken_url_prefix);
        // Stop polling in after a complete next iteration if at least one macro was replaced
        if (replaced && counter>2) counter=2;
      }, 1000); // every 1000ms
    });
  }); // toInit
</script>