diff --git a/test/data/include_js.php b/test/data/include_js.php
index 23207a9d9..1e12588eb 100644
--- a/test/data/include_js.php
+++ b/test/data/include_js.php
@@ -1,106 +1,62 @@
-/*
-<?php
-// if php is available, close the comment so PHP can echo the appropriate JS
-echo "*" . "/";
+(function() {
 
-// initialize vars
-$output = "";
-$version = "";
+window.hasPHP = false /* <?php echo "*" + "/ || true /*"; ?> */;
 
-// extract vars from referrer to determine version
-if(isset($_SERVER['HTTP_REFERER'])){
-	$referrer = $_SERVER['HTTP_REFERER'];
-	$referrer_query_string = parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY );
-	parse_str($referrer_query_string, $referrer_params);
+if ( !window.top.jQueryIncludes ) {
+	
+	window.top.jQueryIncludes = (function() {
+	
+		var location = window.top.document.location.href,
+			baseURL = location.replace( /\/test\/.+/, "/"),
+			version = /(?:&|\?)jquery=([^&]+?)(?:$|&)/.exec( location ),
+			includes, i;
 
-	if(isset($referrer_params['jquery'])){
-		$version = $referrer_params['jquery'];
-	}
+		if ( version ) {
+			version = version[ 1 ];
+			if( version === "min" ) {
+				includes = [ baseURL + "dist/jquery.min.js" ];
+			} else if( version === "dist" ) {
+				includes = [ baseURL + "dist/jquery.js" ];
+			} else {
+				includes = [ "http://code.jquery.com/jquery-" + version + ".js" ];
+			}
+		} else {
+			includes = [
+				"core",
+				"callbacks",
+				"deferred",
+				"support",
+				"data",
+				"queue",
+				"attributes",
+				"event",
+				"sizzle/sizzle",
+				"sizzle-jquery",
+				"traversing",
+				"manipulation",
+				"css",
+				"ajax",
+				"ajax/jsonp",
+				"ajax/script",
+				"ajax/xhr",
+				"effects",
+				"offset",
+				"dimensions",
+				"exports"
+			];
+			for ( i = includes.length; i--; ) {
+				includes[ i ] = baseURL + "src/" + includes[ i ] + ".js";
+			}	
+		}
+		
+		for ( i = includes.length; i--; ) {
+			includes[ i ] = "<script src='" + includes[ i ] + "'><" + "/script>";
+		}
+
+		return includes.join( "\n" );
+	})();
 }
 
-// load up built versions of jquery
-if( $version === "min" ) {
-	$output = @file_get_contents("../../dist/jquery.min.js");
-}elseif( $version === "dist" ) {
-	$output = @file_get_contents("../../dist/jquery.js");
-}elseif( ctype_digit( substr( $version, 0, 1 )) || $version === "git" ) {
-	$output = "document.write('<script src=\"http://code.jquery.com/jquery-" . $version . ".js\"><'+'/script>');";
-}
+document.write( window.top.jQueryIncludes );
 
-// the concatenated version of the the src files is both the default and the fallback
-// because it does not require you to "make" jquery for it to update
-if( $output === "" ) {
-	$files = array(
-		"intro",
-		"core",
-		"callbacks",
-		"deferred",
-		"support",
-		"data",
-		"queue",
-		"attributes",
-		"event",
-		"sizzle/sizzle",
-		"sizzle-jquery",
-		"traversing",
-		"manipulation",
-		"css",
-		"ajax",
-		"ajax/jsonp",
-		"ajax/script",
-		"ajax/xhr",
-		"effects",
-		"offset",
-		"dimensions",
-		"exports",
-		"outro"
-	);
-
-	foreach ( $files as $file ) {
-		$output .= file_get_contents( "../../src/" . $file . ".js" );
-	}
-
-	$output = str_replace( "(function( jQuery ) {", "", $output );
-	$output = str_replace( "})( jQuery );", "", $output );
-}
-
-echo $output;
-die();
-?>
-*/
-
-hasPHP = false;
-
-// javascript fallback using src files in case this is not run on a PHP server!
-// please note that this fallback is for convenience only, and is not fully supported
-// i.e. don't expect all of the tests to work properly
-var baseURL = document.location.href.replace( /\/test\/.+/, "/"),
-	files = [
-		"core",
-		"callbacks",
-		"deferred",
-		"support",
-		"data",
-		"queue",
-		"attributes",
-		"event",
-		"sizzle/sizzle",
-		"sizzle-jquery",
-		"traversing",
-		"manipulation",
-		"css",
-		"ajax",
-		"ajax/jsonp",
-		"ajax/script",
-		"ajax/xhr",
-		"effects",
-		"offset",
-		"dimensions",
-		"exports"
-	],
-	len = files.length,
-	i = 0;
-
-for ( ; i < len; i++ ) {
-	document.write("<script src=\"" + baseURL + "src/" + files[ i ] + ".js\"><"+"/script>");
-}
\ No newline at end of file
+})();