diff --git a/app/models/issue.rb b/app/models/issue.rb
index 9c8123a4d..a2ba73d04 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -906,7 +906,7 @@ class Issue < ActiveRecord::Base
 
   # Returns a string of css classes that apply to the issue
   def css_classes
-    s = "issue status-#{status_id} priority-#{priority_id}"
+    s = "issue status-#{status_id} #{priority.try(:css_classes)}"
     s << ' closed' if closed?
     s << ' overdue' if overdue?
     s << ' child' if child?
diff --git a/app/models/issue_priority.rb b/app/models/issue_priority.rb
index 058b33fc8..d5b7669b3 100644
--- a/app/models/issue_priority.rb
+++ b/app/models/issue_priority.rb
@@ -18,6 +18,9 @@
 class IssuePriority < Enumeration
   has_many :issues, :foreign_key => 'priority_id'
 
+  after_destroy {|priority| priority.class.compute_position_names}
+  after_save {|priority| priority.class.compute_position_names if priority.position_changed? && priority.position}
+
   OptionName = :enumeration_issue_priorities
 
   def option_name
@@ -31,4 +34,35 @@ class IssuePriority < Enumeration
   def transfer_relations(to)
     issues.update_all("priority_id = #{to.id}")
   end
+
+  def css_classes
+    "priority-#{id} priority-#{position_name}"
+  end
+
+  # Clears position_name for all priorities
+  # Called from migration 20121026003537_populate_enumerations_position_name
+  def self.clear_position_names
+    update_all :position_name => nil
+  end
+
+  # Updates position_name for active priorities
+  # Called from migration 20121026003537_populate_enumerations_position_name
+  def self.compute_position_names
+    priorities = where(:active => true).all.sort_by(&:position)
+    if priorities.any?
+      default = priorities.detect(&:is_default?) || priorities[(priorities.size - 1) / 2]
+      priorities.each_with_index do |priority, index|
+        name = case
+          when priority.position == default.position
+            "default"
+          when priority.position < default.position
+            index == 0 ? "lowest" : "low#{index+1}"
+          else
+            index == (priorities.size - 1) ? "highest" : "high#{priorities.size - index}"
+          end
+
+        update_all({:position_name => name}, :id => priority.id)
+      end
+    end
+  end
 end
diff --git a/db/migrate/20121026002032_add_enumerations_position_name.rb b/db/migrate/20121026002032_add_enumerations_position_name.rb
new file mode 100644
index 000000000..52cbe08eb
--- /dev/null
+++ b/db/migrate/20121026002032_add_enumerations_position_name.rb
@@ -0,0 +1,9 @@
+class AddEnumerationsPositionName < ActiveRecord::Migration
+  def up
+    add_column :enumerations, :position_name, :string, :limit => 30
+  end
+
+  def down
+    remove_column :enumerations, :position_name
+  end
+end
diff --git a/db/migrate/20121026003537_populate_enumerations_position_name.rb b/db/migrate/20121026003537_populate_enumerations_position_name.rb
new file mode 100644
index 000000000..31777b75f
--- /dev/null
+++ b/db/migrate/20121026003537_populate_enumerations_position_name.rb
@@ -0,0 +1,9 @@
+class PopulateEnumerationsPositionName < ActiveRecord::Migration
+  def up
+    IssuePriority.compute_position_names
+  end
+
+  def down
+    IssuePriority.clear_position_names
+  end
+end
diff --git a/test/fixtures/enumerations.yml b/test/fixtures/enumerations.yml
index 2c4c82e90..23ea2b3aa 100644
--- a/test/fixtures/enumerations.yml
+++ b/test/fixtures/enumerations.yml
@@ -23,6 +23,7 @@ enumerations_004:
   type: IssuePriority
   active: true
   position: 1
+  position_name: lowest
 enumerations_005: 
   name: Normal
   id: 5
@@ -30,24 +31,28 @@ enumerations_005:
   is_default: true
   active: true
   position: 2
+  position_name: default
 enumerations_006: 
   name: High
   id: 6
   type: IssuePriority
   active: true
   position: 3
+  position_name: high3
 enumerations_007: 
   name: Urgent
   id: 7
   type: IssuePriority
   active: true
   position: 4
+  position_name: high2
 enumerations_008: 
   name: Immediate
   id: 8
   type: IssuePriority
   active: true
   position: 5
+  position_name: highest
 enumerations_009: 
   name: Design
   id: 9
diff --git a/test/unit/issue_priority_test.rb b/test/unit/issue_priority_test.rb
index 96d58196c..642203301 100644
--- a/test/unit/issue_priority_test.rb
+++ b/test/unit/issue_priority_test.rb
@@ -73,4 +73,34 @@ class IssuePriorityTest < ActiveSupport::TestCase
     priority.expects(:reset_positions_in_list).once
     priority.move_to = 'higher'
   end
+
+  def test_clear_position_names_should_set_position_names_to_nil
+    IssuePriority.clear_position_names
+    assert IssuePriority.all.all? {|priority| priority.position_name.nil?}
+  end
+
+  def test_compute_position_names_with_default_priority
+    IssuePriority.clear_position_names
+
+    IssuePriority.compute_position_names
+    assert_equal %w(lowest default high3 high2 highest), IssuePriority.active.all.sort.map(&:position_name)
+  end
+
+  def test_compute_position_names_without_default_priority_should_split_priorities
+    IssuePriority.clear_position_names
+    IssuePriority.update_all :is_default => false
+
+    IssuePriority.compute_position_names
+    assert_equal %w(lowest low2 default high2 highest), IssuePriority.active.all.sort.map(&:position_name)
+  end
+
+  def test_adding_a_priority_should_update_position_names
+    priority = IssuePriority.create!(:name => 'New')
+    assert_equal %w(lowest default high4 high3 high2 highest), IssuePriority.active.all.sort.map(&:position_name)
+  end
+
+  def test_destroying_a_priority_should_update_position_names
+    IssuePriority.find_by_position_name('highest').destroy
+    assert_equal %w(lowest default high2 highest), IssuePriority.active.all.sort.map(&:position_name)
+  end
 end
diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 0c3085bb7..15e79bec4 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -1821,4 +1821,11 @@ class IssueTest < ActiveSupport::TestCase
   def test_journals_after_with_blank_arg_should_return_all_journals
     assert_equal [Journal.find(1), Journal.find(2)], Issue.find(1).journals_after('')
   end
+
+  def test_css_classes_should_include_priority
+    issue = Issue.new(:priority => IssuePriority.find(8))
+    classes = issue.css_classes.split(' ')
+    assert_include 'priority-8', classes
+    assert_include 'priority-highest', classes
+  end
 end