diff --git a/criterion/cache.py b/criterion/cache.py
index 521bf8e..341be47 100644
--- a/criterion/cache.py
+++ b/criterion/cache.py
@@ -19,12 +19,7 @@ def getPoster(id, url=None):
         if not url:
             data = oxweb.criterion.getData(id)
             url = data['posterUrl']
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
-        data = oxlib.net.getUrl(url)
-        f = open(filename, 'w')
-        f.write(data)
-        f.close()
+        oxlib.net.saveUrl(url, filename)
     return filename
 
 def archivePosters(init=False):
diff --git a/impawards/cache.py b/impawards/cache.py
index 05348f6..68213eb 100644
--- a/impawards/cache.py
+++ b/impawards/cache.py
@@ -17,13 +17,6 @@ def getPosterFilename(id, url):
 
 def getPoster(id, url):
     filename = getPosterFilename(id, url)
-    if not os.path.exists(filename):
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
-        data = oxlib.net.getUrl(url)
-        f = open(filename, 'w')
-        f.write(data)
-        f.close()
     return filename
 
 def archivePosters(init=False):
diff --git a/karagarga/cache.py b/karagarga/cache.py
index 9608786..0c41cc0 100644
--- a/karagarga/cache.py
+++ b/karagarga/cache.py
@@ -19,13 +19,7 @@ def getPosterFilename(id, url):
 
 def getPoster(id, url):
     filename = getPosterFilename(id, url)
-    if not os.path.exists(filename):
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
-        data = oxlib.net.getUrl(url)
-        f = open(filename, 'w')
-        f.write(data)
-        f.close()
+    oxlib.net.saveUrl(url, filename)
     return filename
 
 def archivePosters(init=False):
diff --git a/movieposterdb/cache.py b/movieposterdb/cache.py
index 631e70d..36d5711 100644
--- a/movieposterdb/cache.py
+++ b/movieposterdb/cache.py
@@ -20,13 +20,7 @@ def getPoster(id, url=''):
     url_hash = hashlib.sha1(url).hexdigest()
     filename = os.path.join(dirname, '%s.jpg' % url_hash)
     filename = os.path.normpath(filename)
-    if not os.path.exists(filename):
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
-        data = oxlib.net.getUrl(url)
-        f = open(filename, 'w')
-        f.write(data)
-        f.close()
+    oxlib.net.saveUrl(url, filename)
     return filename
 
 def archivePosters(init=False):