怎样在css中将背景图片填满真个页面，并且在滑动的时候使得图片不动，只有内容动的啊?谢谢！
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><body><style type="text/css">body { background-image:url(http://avatar.profile.csdn.net/E/C/F/2_t5500.jpg); background-repeat: repeat; background-attachment:fixed;}</style><div style="height:10000px;">TEST</div></body></html> 缩写方式：
body { background:url(http://avatar.profile.csdn.net/E/C/F/2_t5500.jpg) repeat fixed;}background-attachment:fixed;
谢谢！
