img {
  behavior: expression(
  (this.runtimeStyle.behavior="none") && (this.src.toLowerCase().indexOf('.png')>-1) && (
  this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='scale')",
  this.runtimeStyle.paddingTop = this.height,
  this.runtimeStyle.height = 0
  )
  );
  overflow:hidden;
}