MDL-8992 Added a simple script from http://mar.anomy.net/entry/2006/11/24/02.12.18/ to the mediaplugin filter output. Works like a charm on all tested browsers

filter/mediaplugin/eolas_fix.js

@@ -0,0 +1,80 @@
+// Documentation & updates available at:
+// http://codecentre.eplica.is/js/eolasfix/test.htm
+
+(function( Eolas_Fixed,
+            win, doc,
+            getElementsByTagName,
+            outerHTML,
+            parentNode,
+            tags,
+            elmsToRemoveOnload,
+            x,
+            is_ie,
+            y,z,elm,childNode,HTML,dummy,eolasfix)
+{
+  // run only once!
+  if (win[Eolas_Fixed]) return;
+  win[Eolas_Fixed] = 1;
+
+  eolasfix = function ()
+  {
+    // for each tag name specified in Array t
+    while (tags[++x])
+    {
+      // find all elements of that type in the document
+      // loop through the elements
+      y = 0;
+      while (elm = doc[getElementsByTagName](tags[x])[y++])
+      {
+        if (is_ie)
+        {
+          HTML = '>';
+          z = 0;
+          // <param> elements don't show up in innerHTML IE
+          // so we need to collect their outerHTML.
+          while (childNode = elm.childNodes[z++])
+              HTML += childNode[outerHTML];
+
+          // create a 'dummy' element 
+          dummy = doc.createElement('i');
+          // inject it next to `elm`,
+          elm[parentNode].insertBefore(dummy, elm);
+          // and turn it into an `elm` clone
+          dummy[outerHTML] = elm[outerHTML].replace(/>/, HTML);
+          // increment y to skip over it
+          y++;
+
+          // then hide the original elm
+          elm.style.display = 'none';
+          // and save it in 'The List of Elements to Remove Later'.
+          elmsToRemoveOnload[elmsToRemoveOnload.length] = elm;
+        }
+        else
+        {
+          elm[outerHTML] = elm[outerHTML];
+        }
+      }
+    }
+  };
+
+  // For IE run the fix straight away (because the defer="defer"
+  // attribute has delayed execution until the DOM has loaded).
+  // Then assign a window.onload event to purge the old elements.
+  is_ie && !eolasfix() && win.attachEvent('onload', function(){
+    x=0;
+    while(elm = elmsToRemoveOnload[x++])
+        elm[parentNode].removeChild(elm);
+  });
+  // For Opera set an `DOMContentLoaded` event to run the fix.
+  win.opera && doc.addEventListener('DOMContentLoaded', eolasfix, 0);
+
+})( '__Eolas_Fixed',
+    window, document,
+    'getElementsByTagName',
+    'outerHTML',
+    'parentNode',
+    ['object','embed','applet'],
+    [],
+    -1 /*@cc_on,1 @*/
+  );
+

filter/mediaplugin/filter.php

@@ -85,6 +85,9 @@ function mediaplugin_filter($courseid, $text) {
     if (is_null($newtext)) {
         $newtext = $text;
     }
+    
+    $newtext .= '<script defer="defer" src="' . $CFG->wwwroot . '/filter/mediaplugin/eolas_fix.js" type="text/javascript"></script>';
+
     return $newtext;
 }