??
英[?b?kgra?nd] 美[?b?k?ɡra?nd]
n.(?? ?) ???; ?? ??; r ?pi: t] ???? [r?pit]
vt.retell, recite
vi.Redo; ?? ?? n. 3?? ??: ?? ???: ?? ???: ?? ????: ??
?????? backgroundRepeat ?? ???
??: ?? ??? ?? ??? ??? ?????.
??: ??Object.style.BackgroundRepeat=repeat_value
????: ?? ???. ?? ???? ?? ? ???? ?????. Repeat-x ?? ???? ?? ???? ?????. peat-y ?? ???? ???? ?????. no-repeat ?? ???? ? ?? ?????.?
?????? backgroundRepeat ?? ?
<html>
<head>
<style type="text/css">
body
{
background-color:#FFCC80;
background-image:url(http://img.php.cn/upload/article/000/005/656/5af270fd37755429.jpg);
}
</style>
<script type="text/javascript">
function changeRepeat()
{
document.body.style.backgroundRepeat="repeat-y";
}
</script>
</head>
<body>
<input type="button" onclick="changeRepeat()"
value="Repeat background-image only on the y-axis" />
</body>
</html>???? ?? ?
??? ????? ??? "???? ??" ??? ?????