diff --git a/gallery.py b/gallery.py
index 308b841..792b2f1 100755
--- a/gallery.py
+++ b/gallery.py
@@ -89,6 +89,19 @@ def resize_images (args):
                              % (filename, w,h, x,y) )
         im2.save(filename)
 
+def resize_images_aspectratio (args):
+    x = int(args[0])
+    args = args[1:] ; args.sort()
+    for filename in args:
+        im = Image.open(filename)
+        w,h = im.size
+        y = x*h/w
+        im2 = im.resize((x,y))
+        print >>sys.stderr, ('%s: was %i,%i; resizing to %i,%i'
+                             % (filename, w,h, x,y) )
+        im2.save(filename)
+
+
 
 def main ():
     opts, args = getopt.getopt(sys.argv[1:],
@@ -96,6 +109,7 @@ def main ():
                                ['help',
                                 'html',
                                 'resize',
+                                'resize-ratio',
                                 'size',
                                 'thumbnail',
 										  'rotate'])
@@ -111,8 +125,7 @@ def main ():
     # Ensure that exactly one option is supplied
     if len(opts) == 0:
         print >> sys.stderr, ("%s: must specify one of --size, --help"
-                              "\n            --html, --resize, --thumbnail --rotate" %
-                              sys.argv[0] )
+                              "\n            --html, --resize, --resize-ratio, --thumbnail --rotate" % sys.argv[0] )
         sys.exit(0)
     elif len(opts) > 1:
         print >> sys.stderr, ("%s: cannot specify multiple options" %
@@ -125,6 +138,8 @@ def main ():
         output_html(args)
     elif opt == '--resize':
         resize_images(args)
+    elif opt == '--resize-ratio':
+        resize_images_aspectratio(args)
     elif opt == '--rotate':
         rotate_images(args)
     elif opt == '--size':