IE7-8调整大小过滤器

Question

为什么这不会在IE7-8中重新调整我的图像????

#carousel ul li #myImage {
  background: url("../img/myImage.png") no-repeat;
  filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../img/myImage.png',sizingMethod='scale');
  -ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../img/myImage.png',sizingMethod='scale')";
}