diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 8deed90..a3509b9 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -165,16 +165,16 @@ module ApplicationHelper
     # when using an image link, try to use an attachment, if possible
     attachments = options[:attachments]
     if attachments
-      text = text.gsub(/!([<>=]*)(\S+\.(gif|jpg|jpeg|png))!/) do |m|
-        align = $1
-        filename = $2
+      text = text.gsub(/!((\<|\=|\>)?(\([^\)]+\))?(\[[^\]]+\])?(\{[^\}]+\})?)(\S+\.(gif|jpg|jpeg|png))!/) do |m|
+        style = $1
+        filename = $6
         rf = Regexp.new(filename,  Regexp::IGNORECASE)
         # search for the picture in attachments
         if found = attachments.detect { |att| att.filename =~ rf }
           image_url = url_for :controller => 'attachments', :action => 'download', :id => found.id
-          "!#{align}#{image_url}!"
+          "!#{style}#{image_url}!"
         else
-          "!#{align}#{filename}!"
+          "!#{style}#{filename}!"
         end
       end
     end
diff --git a/lib/redmine/wiki_formatting.rb b/lib/redmine/wiki_formatting.rb
index 4aebe9a..f7fa803 100644
--- a/lib/redmine/wiki_formatting.rb
+++ b/lib/redmine/wiki_formatting.rb
@@ -25,7 +25,8 @@ module Redmine
   
     class TextileFormatter < RedCloth
       
-      RULES = [:inline_auto_link, :inline_auto_mailto, :textile, :inline_toc, :inline_macros]
+      # auto_link rule after textile rules so that it doesn't break !image_url! tags
+      RULES = [:textile, :inline_auto_link, :inline_auto_mailto, :inline_toc, :inline_macros]
       
       def initialize(*args)
         super
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 06446d1..2af6c55 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -44,12 +44,18 @@ class ApplicationHelperTest < HelperTestCase
       textilizable('test@foo.bar')
   end
   
-  def test_textile_tags
+  def test_inline_images
     to_test = {
-      # inline images
       '!http://foo.bar/image.jpg!' => '<img src="http://foo.bar/image.jpg" alt="" />',
       'floating !>http://foo.bar/image.jpg!' => 'floating <div style="float:right"><img src="http://foo.bar/image.jpg" alt="" /></div>',
-      # textile links
+      'with class !(some-class)http://foo.bar/image.jpg!' => 'with class <img src="http://foo.bar/image.jpg" class="some-class" alt="" />',
+      'with style !{width:100px;height100px}http://foo.bar/image.jpg!' => 'with style <img src="http://foo.bar/image.jpg" style="width:100px;height100px;" alt="" />',
+    }
+    to_test.each { |text, result| assert_equal "<p>#{result}</p>", textilizable(text) }
+  end
+  
+  def test_textile_external_links
+    to_test = {
       'This is a "link":http://foo.bar' => 'This is a <a href="http://foo.bar" class="external">link</a>',
       'This is an intern "link":/foo/bar' => 'This is an intern <a href="/foo/bar">link</a>',
       '"link (Link title)":http://foo.bar' => '<a href="http://foo.bar" title="Link title" class="external">link</a>'