setting ImageStyle to an icon on a Label

[rottem]

Hi,
I am using FF3.6 and SmartGwt 2.5
I have a Label with an icon and a string.
I want the icon not to stretch. I want it to be shown at its normal size.
I set the size of the label using setWidth and setHeight but I don't know the origianl size of the image so I cannot use setIconSize.
Is it possible to set some style to the icon so that it doesn't stretch?
Thanks