diff --git a/genpac.py b/genpac.py
index ecd91e01..0cb7d681 100755
--- a/genpac.py
+++ b/genpac.py
@@ -170,16 +170,12 @@ def generateProxyVar():
     else:
         return 'SOCKS5 %s; SOCKS %s' % (host, host)
 
-def convertListToJSArray(list):
-    array = ''
-    indent = '    '
-    for list_item in list:
-        if len(array) != 0:
-            array +=",\n"
-        array += "%s'%s'" % (indent, list_item)
-    if len(array) != 0:
-        array = "\n" + array + "\n" + indent;
-    return "[" + array + "]"
+def convertListToJSArray(lst):
+    lst = filter(lambda s: isinstance(s, (str, unicode)) and len(s) > 0, lst)
+    array = "',\n    '".join(lst)
+    if len(array) > 0:
+        array = "\n    '" + array + "'\n    "
+    return '[' + array + ']'
 
 def parseGFWListRules():
     global gfwlistContent
@@ -207,91 +203,82 @@ def generatePACRuls(userRules, gfwListRules):
     directRegexpList, directWildcardList, proxyRegexpList, proxyWildcardList = parseGFWListRules()
     directUserRegexpList, directUserWildcardList, proxyUserRegexpList, proxyUserWildcardList = parseUserRules()
 
-    rules = '''    //User Rules
-    var directUserRegexpList   = %s;
-    var directUserWildcardList = %s;
-    var proxyUserRegexpList    = %s;
-    var proxyUserWildcardList  = %s;
-
-    //gfwlist Rules
-    var directRegexpList   = %s;
-    var directWildcardList = %s;
-    var proxyRegexpList    = %s;
-    var proxyWildcardList  = %s;
-
-    ''' % ( convertListToJSArray(directUserRegexpList), 
-            convertListToJSArray(directUserWildcardList), 
-            convertListToJSArray(proxyUserRegexpList), 
-            convertListToJSArray(proxyUserWildcardList),
-            convertListToJSArray(directRegexpList), 
-            convertListToJSArray(directWildcardList), 
-            convertListToJSArray(proxyRegexpList), 
-            convertListToJSArray(proxyWildcardList)
-          )
+    rules = '''
+// user rules
+var directUserRegexpList   = %s;
+var directUserWildcardList = %s;
+var proxyUserRegexpList    = %s;
+var proxyUserWildcardList  = %s;
+
+// gfwlist rules
+var directRegexpList   = %s;
+var directWildcardList = %s;
+var proxyRegexpList    = %s;
+var proxyWildcardList  = %s;
+''' % ( convertListToJSArray(directUserRegexpList), 
+        convertListToJSArray(directUserWildcardList), 
+        convertListToJSArray(proxyUserRegexpList), 
+        convertListToJSArray(proxyUserWildcardList),
+        convertListToJSArray(directRegexpList), 
+        convertListToJSArray(directWildcardList), 
+        convertListToJSArray(proxyRegexpList), 
+        convertListToJSArray(proxyWildcardList)
+        )
     return rules
 
 
 def CreatePacFile(gfwlistRules, userRules):
     pacContent = '''/**
- * Generated by GenPAC %(ver)s
- * Author: JinnLynn http://jeeker.net
- * Project Page: http://jeeker.net/projects/genpac/
+ * GenPAC %(ver)s http://jeeker.net/projects/genpac/
  * Generated: %(generated)s
- * GFWList Last Modified: %(gfwmodified)s
+ * GFWList Last-Modified: %(gfwmodified)s
  */
 
-function regExpMatch(url, pattern) {
-    try { 
-        return new RegExp(pattern).test(url); 
-    } catch(ex) { 
-        return false; 
-    }
-}
-
+// proxy
+var P = "%(proxy)s";
+%(rules)s
 function FindProxyForURL(url, host) {
-    var P = "%(proxy)s";
     var D = "DIRECT";
-%(rules)s
+
+    var regExpMatch = function(url, pattern) {
+        try { 
+            return new RegExp(pattern).test(url); 
+        } catch(ex) { 
+            return false; 
+        }
+    };
+    
     var i = 0;
-    var length = 0;
 
-    length = directUserRegexpList.length;
-    for (i = 0; i < length; i++) {
+    for (i in directUserRegexpList) {
         if(regExpMatch(url, directUserRegexpList[i])) return D;
     }
 
-    length = directUserWildcardList.length;
-    for (i = 0; i < length; i++) {
+    for (i in directUserWildcardList) {
         if (shExpMatch(url, directUserWildcardList[i])) return D;
     }
 
-    length = proxyUserRegexpList.length;
-    for (i = 0; i < length; i++) {
+    for (i in proxyUserRegexpList) {
         if(regExpMatch(url, proxyUserRegexpList[i])) return P;
     }
 
-    length = proxyUserWildcardList.length;
-    for (i = 0; i < length; i++) {
+    for (i in proxyUserWildcardList) {
         if(shExpMatch(url, proxyUserWildcardList[i])) return P;
     }
 
-    length = directRegexpList.length;
-    for (i = 0; i < length; i++) {
+    for (i in directRegexpList) {
         if(regExpMatch(url, directRegexpList[i])) return D;
     }
 
-    length = directWildcardList.length;
-    for (i = 0; i < length; i++) {
+    for (i in directWildcardList) {
         if (shExpMatch(url, directWildcardList[i])) return D;
     }
 
-    length = proxyRegexpList.length;
-    for (i = 0; i < length; i++) {
+    for (i in proxyRegexpList) {
         if(regExpMatch(url, proxyRegexpList[i])) return P;
     }
 
-    length = proxyWildcardList.length;
-    for (i = 0; i < length; i++) {
+    for (i in proxyWildcardList) {
         if(shExpMatch(url, proxyWildcardList[i])) return P;
     }
 
@@ -335,6 +322,7 @@ def CreatePacFile(gfwlistRules, userRules):
     if res == False:
         print "GFWList获取失败，请检查相关内容是否配置正确。"
         print "错误信息: %s" % errorInfo
+        sys.exit(1)
     else:
         print "GFWList[Last-Modified: %s]已获取。" % gfwlistModified
         print '正在解析 GFWList Rules ...'
diff --git a/user-rules.txt b/user-rules.txt
index 7d44a2bf..a9201020 100644
--- a/user-rules.txt
+++ b/user-rules.txt
@@ -22,8 +22,5 @@
 !      如:
 @@sina.com
 @@163.com
-@@github.com
-.twitter.com
-||twitter.com
-.youtube.com
-||youtube.com
\ No newline at end of file
+twitter.com
+youtube.com
\ No newline at end of file