1.17  保护页面内容不被复制.html

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Javascript实例</title>
<!--禁止复制-->
<SCRIPT LANGUAGE=javascript>
function click() {
alert('禁止你的左键复制！') }
function click1() {
if (event.button==2) {alert('禁止右键点击~！') }}
function CtrlKeyDown(){
if (event.ctrlKey) {alert('不当的拷贝将损害您的系统！') }}
document.onkeydown=CtrlKeyDown;
document.onselectstart=click;
document.onmousedown=click1;
</SCRIPT>
</head>
<body  bgcolor="#FF3333">
<script language="JavaScript" type="text/javascript">  
click();
</script> 

<table>
<tr>
<td>
请不要随便复制内容哦！
</td>
</tr>
</table>
</body>
</html>