right to left directive doesn't effect css li with checkbox

div.myzone ul li.checkbox{

        background: url(../images/cube.gif) no-repeat 0px 3px;
        list-style:none;
}

in a left to right page it works fine. (JPG some left just. text). when I try to convert it to right to left - the text is right justified, but the jpg remains on the left side, ignoring anything I try. so I get:

JPG                  some rigth just text 
JPG                  more right just. text

instead of 
                        some right just. text JPG
                        more right just. text jpg.

if I remove the css, the li bullet goes to the right place.

How can I make the jpg appear in the right place ?

Thanks.

have you tried..

100% 3px instead of 0 3px?