body背景拉伸效果

<div id="backgroundImage">

02	<img src="img/bodybg.jpg" />

03

</div>

04	<div id="onbackgroundbody">

05

</div>

06

07

<style>

08

html{

09	width:100%;

10	height:100%;

11

margin:0;

12	padding:0;

13

}

14

body{

15	width:100%;

16	height:100%;

17

margin:0;

18	padding:0;

19

}

20	#backgroundImage{

21	position: absolute;

22	width: 100%;

23	height: 100%;

24

top: 0;

25

left: 0;

26	overflow: hidden;

27	z-index: -1;

28

}

29	#backgroundImage img{

30	width: 100%;

31	height: 100%;

32

}

33	#onbackgroundbody{

34	width: 100%;

35	height: 100%;

36

}

37

</style>