Tests: Fix failing ajax tests in oldIE

test/data/test.html

@@ -3,5 +3,5 @@ html text<br/>
 testFoo = "foo"; jQuery('#foo').html('foo');
 ok( true, "test.html executed" );
 /* ]]> */</script>
-<script src="data/test.js"></script>
+<script src="data/testbar.php"></script>
 blabla

test/data/test.php

@@ -3,5 +3,5 @@ html text<br/>
 testFoo = "foo"; jQuery('#foo').html('foo');
 ok( true, "test.php executed" );
 /* ]]> */</script>
-<script src="data/test.js?<?php srand(); echo time() . '' . rand(); ?>"></script>
-blabla
+<script src="data/testbar.php?<?php srand(); echo time() . '' . rand(); ?>"></script>
+blabla

test/data/testbar.php

@@ -1,3 +1,3 @@
 this.testBar = "bar";
 jQuery("#ap").html("bar");
-ok( true, "test.js executed");
+ok( true, "testbar.php executed");