try:
<script language="JavaScript">
<!--
document.onclick=function(){
if(event.shiftKey&&event.srcElement.tagName=="A"){
alert('no blank')
event.cancelBubble=true;
event.returnValue=false
}
}
//-->
</script>
<a href="www.csdn.net">csdn</a>
<script language="JavaScript">
<!--
document.onclick=function(){
if(event.shiftKey&&event.srcElement.tagName=="A"){
alert('no blank')
event.cancelBubble=true;
event.returnValue=false
}
}
//-->
</script>
<a href="www.csdn.net">csdn</a>
<script>
function KeyDown(){ //屏蔽鼠标右键、Ctrl+n、shift+F10、F5刷新、退格键
//alert("ASCII代码是："+event.keyCode);
if ((window.event.altKey)&&
((window.event.keyCode==37)|| //屏蔽 Alt+ 方向键 ←
(window.event.keyCode==39))){ //屏蔽 Alt+ 方向键 →
alert("不准你使用ALT+方向键前进或后退网页！");
event.returnValue=false;
}
if ((event.keyCode==8) || //屏蔽退格删除键
(event.keyCode==116)|| //屏蔽 F5 刷新键
(event.keyCode==112)|| //屏蔽 F1 刷新键
(event.ctrlKey && event.keyCode==82)){ //Ctrl + R
event.keyCode=0;
event.returnValue=false;
}
if ((event.ctrlKey)&&(event.keyCode==78)) //屏蔽 Ctrl+n
event.returnValue=false;
if ((event.shiftKey)&&(event.keyCode==121)) //屏蔽 shift+F10
event.returnValue=false;
if (window.event.srcElement.tagName == "A" && window.event.shiftKey)
window.event.returnValue = false; //屏蔽 shift 加鼠标左键新开一网页
if ((window.event.altKey)&&(window.event.keyCode==115)){ //屏蔽Alt+F4
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;}
}
function Showhelp(){
alert("呵呵");
return false;
}
</script>
<head>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>键盘代码</title>
<style>
<!--
body { font-family: Verdana; color: #000080; font-size: 9pt }
--></style>
</head>
<body onkeydown="KeyDown()" oncontextmenu="event.returnValue=false" onhelp="Showhelp();return false;">
<p align="center">请按键盘</p>
</body>
</html>