01.
02.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
03.<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
04.<head>
05.<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
06.<title></title>
07.</head>
08.<body>
09.<iframe id="FF" src="B.htm"></iframe>
10.<input type="submit" value=" OK " onclick="OK()"/>
11.
12.<script language="JavaScript">
13.function OK()
14.{
15. // 操作iframe中內(nèi)容的CSS
16. var iframe = document.getElementById('FF');
17. var body = iframe.contentWindow.document.body;
18.
19. body.style.marginTop = 50;
20. body.style.padding = 0;
21. body.style.fontSize = 30;
22. body.style.textAlign = 'center';
23. body.style.backgroundColor = 'red';
24. body.style.color = 'blue';
25.}
26.</script>
27.</body>
28.</html>
