IE9 supports CSS3 transformation with -ms-trasform
but for older version there isn't any method but using a filter:
filter: progid:DXImageTransform.Microsoft.Matrix(sizingMethod='auto expand',
M11=1.3, M12=0,
M21=0, M22=1.3);
Where 1.3 is your scale factor.
M11, M12, M21 and M22 are values of the transformation matrix that will be applied to the element.
Note that this matrix will not scale the rectangle in the center. The best way to resolve this is to use some negative margins, minus half width times the factor for the left margin and minus half height times the factor for the top.
Links:
- MSDN
- Transformation Matrix