CSS控制网页背景图片全适应，随屏幕大小自动适应

body {
	background:url(img/czs_bg02.jpg);
	filter:"progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod='scale')";
	-moz-background-size:100% 100%;
	background-size:100% 100%;
}