[Sergey.Hilobok]

save in the png and make a empty gif file (1x1 px)

html:
<img src="empty.gif" id="you_id" width="102" height="48" alt="">

css:
#you_id {
background: url(you_png_file.png);
// background: none;
// filter: progidXImageTransform.Microsoft.AlphaImageLoader (src='you_png_file.png');
}