diff --git a/Mac/IDE scripts/Widget demos/ActivateWindowDemo.py b/Mac/IDE scripts/Widget demos/ActivateWindowDemo.py
index 3cd832b..d8fc946 100644
--- a/Mac/IDE scripts/Widget demos/ActivateWindowDemo.py
+++ b/Mac/IDE scripts/Widget demos/ActivateWindowDemo.py
@@ -4,18 +4,18 @@
 # evb 22 4 99
 
 class ActivateDemo:
-	
-	def __init__(self):
-		self.w = W.Window((200, 200), 'Activate demo')
-		self.w.bind("<activate>", self.my_activate_callback)
-		self.w.open()
-	
-	def my_activate_callback(self, onoff):
-		'''the callback gets 1 parameter which indicates whether the window
-		has been activated (1) or clicked to the back (0)'''
-		if onoff == 1:
-			print "I'm in the front now!"
-		else:
-			print "I've been clicked away, Oh No!"
+
+    def __init__(self):
+        self.w = W.Window((200, 200), 'Activate demo')
+        self.w.bind("<activate>", self.my_activate_callback)
+        self.w.open()
+
+    def my_activate_callback(self, onoff):
+        '''the callback gets 1 parameter which indicates whether the window
+        has been activated (1) or clicked to the back (0)'''
+        if onoff == 1:
+            print "I'm in the front now!"
+        else:
+            print "I've been clicked away, Oh No!"
 
 ad = ActivateDemo()
diff --git a/Mac/IDE scripts/Widget demos/KeyTester.py b/Mac/IDE scripts/Widget demos/KeyTester.py
index a9f3140..ae47550 100644
--- a/Mac/IDE scripts/Widget demos/KeyTester.py
+++ b/Mac/IDE scripts/Widget demos/KeyTester.py
@@ -4,12 +4,12 @@
 
 # key callback function
 def tester(char, event):
-	text = "%r\r%d\r%s\r%s" % (char, ord(char), hex(ord(chart)), oct(ord(char)))
-	window.keys.set(text)
+    text = "%r\r%d\r%s\r%s" % (char, ord(char), hex(ord(chart)), oct(ord(char)))
+    window.keys.set(text)
 
 # close callback
 def close():
-	window.close()
+    window.close()
 
 # new window
 window = W.Dialog((180, 100), "Type a character")
diff --git a/Mac/IDE scripts/Widget demos/ListWindow.py b/Mac/IDE scripts/Widget demos/ListWindow.py
index ef066b9..f78b4b8 100644
--- a/Mac/IDE scripts/Widget demos/ListWindow.py
+++ b/Mac/IDE scripts/Widget demos/ListWindow.py
@@ -1,10 +1,10 @@
 import W
 
 def listhit(isdbl):
-	if isdbl:
-		print "double-click in list!"
-	else:
-		print "click in list."
+    if isdbl:
+        print "double-click in list!"
+    else:
+        print "click in list."
 
 window = W.Window((200, 400), "Window with List", minsize = (150, 200))
 
diff --git a/Mac/IDE scripts/Widget demos/TwoLists.py b/Mac/IDE scripts/Widget demos/TwoLists.py
index ee52c89..f1b58f2 100644
--- a/Mac/IDE scripts/Widget demos/TwoLists.py
+++ b/Mac/IDE scripts/Widget demos/TwoLists.py
@@ -1,16 +1,16 @@
 import W
 
 def twothird(width, height):
-	return (8, 8, width - 8, 2*height/3 - 4)
+    return (8, 8, width - 8, 2*height/3 - 4)
 
 def onethird(width, height):
-	return (8, 2*height/3 + 4, width - 8, height - 22)
+    return (8, 2*height/3 + 4, width - 8, height - 22)
 
 def halfbounds1(width, height):
-	return (0, 0, width/2 - 4, height)
+    return (0, 0, width/2 - 4, height)
 
 def halfbounds2(width, height):
-	return (width/2 + 4, 0, width, height)
+    return (width/2 + 4, 0, width, height)
 
 window = W.Window((400, 400), "Sizable window with two lists", minsize = (200, 200))
 
diff --git a/Mac/IDE scripts/Widget demos/WidgetTest.py b/Mac/IDE scripts/Widget demos/WidgetTest.py
index 424e70d..a2e8d08 100644
--- a/Mac/IDE scripts/Widget demos/WidgetTest.py
+++ b/Mac/IDE scripts/Widget demos/WidgetTest.py
@@ -2,34 +2,34 @@
 
 # define some callbacks
 def callback():
-	window.close()
+    window.close()
 
 def checkcallback(value):
-	print "hit the checkbox", value
+    print "hit the checkbox", value
 
 def radiocallback(value):
-	print "hit radiobutton #3", value
+    print "hit radiobutton #3", value
 
 def scrollcallback(value):
-	widget = window.hbar
-	if value == "+":
-		widget.set(widget.get() - 1)
-	elif value == "-":
-		widget.set(widget.get() + 1)
-	elif value == "++":
-		widget.set(widget.get() - 10)
-	elif value == "--":
-		widget.set(widget.get() + 10)
-	else:   # in thumb
-		widget.set(value)
-	print "scroll...", widget.get()
+    widget = window.hbar
+    if value == "+":
+        widget.set(widget.get() - 1)
+    elif value == "-":
+        widget.set(widget.get() + 1)
+    elif value == "++":
+        widget.set(widget.get() - 10)
+    elif value == "--":
+        widget.set(widget.get() + 10)
+    else:   # in thumb
+        widget.set(value)
+    print "scroll...", widget.get()
 
 def textcallback():
-	window.et3.set(window.et1.get())
+    window.et3.set(window.et1.get())
 
 def cancel():
-	import EasyDialogs
-	EasyDialogs.Message("Cancel!")
+    import EasyDialogs
+    EasyDialogs.Message("Cancel!")
 
 # make a non-sizable window
 #window = W.Window((200, 300), "Fixed Size")
@@ -77,9 +77,9 @@
 window.open()
 
 if 0:
-	import time
-	for i in range(20):
-		window.et2.set(repr(i))
-		#window.et2.SetPort()
-		#window.et2.draw()
-		time.sleep(0.1)
+    import time
+    for i in range(20):
+        window.et2.set(repr(i))
+        #window.et2.SetPort()
+        #window.et2.draw()
+        time.sleep(0.1)