diff --git a/python/mine/ri_cmd.py b/python/ri_cmd.py
similarity index 97%
rename from python/mine/ri_cmd.py
rename to python/ri_cmd.py
index 13844f7..affe636 100644
--- a/python/mine/ri_cmd.py
+++ b/python/ri_cmd.py
@@ -2,7 +2,6 @@
 ''' handle gui button related commands.'''
 
 import ri_tk as display
-import ri_seq
 import ri_widget
 import ri_data
 
@@ -14,15 +13,15 @@ def quit():
     ''' correspond to quit button '''
     # maybe a quit in current widget, so call widget.hide()
     # get current widget, call its quit()
-    q, t = ri_seq.Sequence.current()
+    q, t = ri_widget.Sequence.current()
     ri_widget.Widget.dict[t].hide()
     display.quit()
     ri_data.to_xml()
 
 def previous():
     ''' correspond to previous button '''
-    q, t = ri_seq.Sequence.current()
-    wid_name = ri_seq.previous()
+    q, t = ri_widget.Sequence.current()
+    wid_name = ri_widget.Sequence.previous()
     if wid_name is not None:
         ri_widget.Widget.dict[t].hide()
 
@@ -32,8 +31,8 @@ def previous():
 
 def next():
     ''' correspond to next button '''
-    q, t = ri_seq.Sequence.current()
-    wid_name = ri_seq.next()
+    q, t = ri_widget.Sequence.current()
+    wid_name = ri_widget.Sequence.next()
     if wid_name is not None:
         ri_widget.Widget.dict[t].hide()
 
diff --git a/python/mine/ri_data.py b/python/ri_data.py
similarity index 100%
rename from python/mine/ri_data.py
rename to python/ri_data.py
diff --git a/python/mine/ri_seq.py b/python/ri_seq.py
similarity index 65%
rename from python/mine/ri_seq.py
rename to python/ri_seq.py
index 3b63739..9b2428d 100644
--- a/python/mine/ri_seq.py
+++ b/python/ri_seq.py
@@ -20,7 +20,18 @@ class Sequence:
     @staticmethod
     def current():
         return (Sequence.current_sequence, Sequence.current_sequence.steps[Sequence.current_sequence.current_step])
-        
+
+    @staticmethod
+    def previous():
+        if Sequence.current_sequence.current_step:
+            Sequence.current_sequence.current_step -= 1
+            return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
+
+    @staticmethod
+    def next():
+        if Sequence.current_sequence.current_step < len(Sequence.current_sequence.steps)-1:
+            Sequence.current_sequence.current_step += 1
+            return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
 
 def construct(xml_root):
     ''' construct Sequence's static members'''
@@ -28,12 +39,4 @@ def construct(xml_root):
         if s.nodeType == s.ELEMENT_NODE and s.nodeName == "sequence":
             Sequence.dict[s.attributes["name"].value] = Sequence(s)
 
-def previous():
-    if Sequence.current_sequence.current_step:
-        Sequence.current_sequence.current_step -= 1
-        return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
 
-def next():
-    if Sequence.current_sequence.current_step < len(Sequence.current_sequence.steps)-1:
-        Sequence.current_sequence.current_step += 1
-        return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
diff --git a/python/mine/ri_tk.py b/python/ri_tk.py
similarity index 98%
rename from python/mine/ri_tk.py
rename to python/ri_tk.py
index 75c6ed4..a9cf30d 100644
--- a/python/mine/ri_tk.py
+++ b/python/ri_tk.py
@@ -38,6 +38,8 @@ def create_widget(w):
         # set step name which will be shown on base widget column 1 row 0
         var_dict['main.step_name'].set(w.name)
 
+import os.path
+
 class MyImage:
     ''' MyImage - a dummy class to hold Image variable '''
     count = 0
@@ -49,7 +51,8 @@ def modify_attributes(attr_dict):
             # I think there is a bug in Tkinter on Image processing
             # I have to bypass it in the following way:
             image_var = 'a' + str(MyImage.count)
-            setattr(MyImage, image_var, Tkinter.PhotoImage(file=attr_dict[a]))
+            drt = os.path.join(os.path.dirname(__file__), '../data')
+            setattr(MyImage, image_var, Tkinter.PhotoImage(file=os.path.join(drt, attr_dict[a])))
             MyImage.count += 1
             attr_dict[a] = getattr(MyImage, image_var)
         elif a == 'command':
diff --git a/python/mine/ri_widget.py b/python/ri_widget.py
similarity index 79%
rename from python/mine/ri_widget.py
rename to python/ri_widget.py
index ce4ba81..0e8604d 100644
--- a/python/mine/ri_widget.py
+++ b/python/ri_widget.py
@@ -135,13 +135,48 @@ class TopWindow:
     def hide(self):
         display.destroy_top_window(self)
 
+class Sequence:
+    ''' implement sequence in interface xml'''
+    dict={}
+
+    def __init__(self, xml_node):
+        self.steps = [ s.attributes["name"].value for s in xml_node.childNodes
+                 if s.nodeType == s.ELEMENT_NODE and s.nodeName == "widget" ]
+        self.current_step = 0
+        Sequence.dict[xml_node.attributes["name"].value] = self
+
+    def set_current_step(self, st):
+        ''' set current step based on input step name'''
+        self.current_step = self.steps.index(st)
+
+    @staticmethod
+    def set_current_sequence(name):
+        Sequence.current_sequence = Sequence.dict[name]
+
+    @staticmethod
+    def current():
+        return (Sequence.current_sequence, Sequence.current_sequence.steps[Sequence.current_sequence.current_step])
+
+    @staticmethod
+    def previous():
+        if Sequence.current_sequence.current_step:
+            Sequence.current_sequence.current_step -= 1
+            return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
+
+    @staticmethod
+    def next():
+        if Sequence.current_sequence.current_step < len(Sequence.current_sequence.steps)-1:
+            Sequence.current_sequence.current_step += 1
+            return Sequence.current_sequence.steps[Sequence.current_sequence.current_step]
+
 def construct(xml_root):
     ''' construct Widget's static members'''
     for n in xml_root.childNodes:
         if n.nodeType == n.ELEMENT_NODE:
             if n.nodeName == "widget": Widget(n)
             elif n.nodeName == "message_box": MessageBox(n)
-            elif n.nodeName == "top_window": TopWindow(n)
+            elif n.nodeName == "top_window":  TopWindow(n)
+            elif n.nodeName == "sequence":    Sequence(n)
  
 def init_display(bw):
     ''' base widget name'''
diff --git a/python/mine/test.py b/python/test.py
similarity index 79%
rename from python/mine/test.py
rename to python/test.py
index 4baf9f2..f777d05 100644
--- a/python/mine/test.py
+++ b/python/test.py
@@ -2,7 +2,6 @@
 
 import ri_widget
 import ri_tk
-import ri_seq
 import ri_data
 
 import sys
@@ -24,11 +23,11 @@ for opt, arg in opts:
         begin_step = arg
 
 if len(args) == 0:
-    itf_xml = "../../xml/interface_t.xml"
-    ins_xml = "../../xml/install.xml"
+    itf_xml = "../xml/interface_t.xml"
+    ins_xml = "../xml/install.xml"
 elif len(args) == 1:
     itf_xml = args[0]
-    ins_xml = "../../xml/install.xml"
+    ins_xml = "../xml/install.xml"
 else:
     itf_xml = args[0]
     ins_xml = args[1]
@@ -39,14 +38,13 @@ ri_data.init_from_xml()
 #ri_data.init()
 
 ri_widget.construct(xmldoc.firstChild)
-ri_seq.construct(xmldoc.firstChild)
 
 base_widget_name = xmldoc.firstChild.attributes["base_widget"].value
 ri_widget.init_display(base_widget_name)
 
 main_sequence_name = xmldoc.firstChild.attributes["sequence"].value
-ri_seq.Sequence.set_current_sequence(main_sequence_name)
-main_sequence = ri_seq.Sequence.dict[main_sequence_name]
+ri_widget.Sequence.set_current_sequence(main_sequence_name)
+main_sequence = ri_widget.Sequence.dict[main_sequence_name]
 
 if begin_step is None:
     begin_step = main_sequence.steps[0]
diff --git a/python/mine/test_data.py b/python/test_data.py
similarity index 100%
rename from python/mine/test_data.py
rename to python/test_data.py
diff --git a/xml/interface_t.xml b/xml/interface_t.xml
index 8b1ebd2..50d3e7d 100644
--- a/xml/interface_t.xml
+++ b/xml/interface_t.xml
@@ -22,7 +22,7 @@ row 4 | quit	    	      			 previous  next    |
 
     <variable name='main.step_name' type='StringVar' />
     <widget type='Label'>
-      <widget_attribute image='/home/zhi/work/linx/install/graphicalinstall/images/linxlogo.gif'/>
+      <widget_attribute image='linxlogo.gif'/>
       <grid_location row='0' column='0' sticky='W' padx='5' pady='5'/>
     </widget>
     <widget type='Label'>