RTL any CSS file (CSS3 supported)
- swap left/right in css rule
- swap left/right & ltr/rtl in value
- rtl file must contain only direction related rules and values
- reset ltr direction values (margin-left:10px => margin-left:initial; margin-right:10px);
- support background position
- support custom format CSS3 (box-shadow and border-radius)
- the CSS file must be vaild before using the rtler (http://validator.w3.org/)
- if the original file did not include dir:ltr, add dir:rtl to the body tag