Allow mixing length and percentage values with keyword values for the background-position property, which is now allowed per section 14.2.1 of CSS 2.1 r+sr=dbaron a=asa git-svn-id: svn://10.0.0.236/trunk@154666 18797224-902f-48f8-a5cc-f745e15eee43
Allow mixing length and percentage values with keyword values for the background-position property, which is now allowed per section 14.2.1 of CSS 2.1 r+sr=dbaron a=asa git-svn-id: svn://10.0.0.236/trunk@154666 18797224-902f-48f8-a5cc-f745e15eee43