Index: django/contrib/admin/media/js/admin/RelatedObjectLookups.js
===================================================================
--- django/contrib/admin/media/js/admin/RelatedObjectLookups.js	(revision 11211)
+++ django/contrib/admin/media/js/admin/RelatedObjectLookups.js	(working copy)
@@ -84,7 +84,37 @@
             } else {
                 elem.value = newId;
             }
-        }
+	//  check if the className contains radiolist - if it's HORIZONTAL, then it won't match if we compare explicitly
+        } else if (elem.className.indexOf('radiolist') > -1) {
+	    var cnt = elem.getElementsByTagName('li').length;
+	    var idName = elem.id+'_'+cnt;
+	    var newLi = document.createElement('li');
+	    var newLabel = document.createElement('label');
+	    var newText = document.createTextNode(' '+newRepr);
+	    try {
+		// IE doesn't support settings name, type, or class by setAttribute
+		var newInput = document.createElement('<input type=\'radio\' name=\''+name.slice(3)+'\' checked=\'checked\' class=\''+elem.className+'\' />');
+	    } catch(err) {
+		var newInput = document.createElement('input');
+		newInput.setAttribute('class', elem.className);
+		newInput.setAttribute('type', 'radio');
+		newInput.setAttribute('name', name.slice(3));
+	    }
+	    newLabel.setAttribute('for', idName);
+	    newInput.setAttribute('id', idName);
+	    newInput.setAttribute('value', newId);
+	    newInput.setAttribute('checked', 'checked');
+	    newLabel.appendChild(newInput);
+	    // check if the content being added is a tag - useful for image lists
+	    if (newRepr.charAt(0) == '<' && newRepr.charAt(newRepr.length-1) == '>') {
+		newLabel.innerHTML += newRepr;
+	    }
+	    else {
+		newLabel.appendChild(newText);
+	    }
+	    newLi.appendChild(newLabel);
+	    elem.appendChild(newLi);
+	}
     } else {
         var toId = name + "_to";
         elem = document.getElementById(toId);