<html><head>
<script language="javascript">
ns4 = (document.layers) ? true : false; ie4 = (document.all) ? true : false;
function keyDown(e){
if(ns4){ var nkey=e.which; var iekey='现在是ns浏览器'; var realkey=String.fromCharCode(e.which);
} if(ie4){ var iekey=event.keyCode; var nkey='现在是ie浏览器'; var realkey=String.fromCharCode(event.keyCode); if(event.keyCode==32){realkey='\' 空格\''} if(event.keyCode==13){realkey='\' 回车\''} if(event.keyCode==27){realkey='\' Esc\''} if(event.keyCode==16){realkey='\' Shift\''} if(event.keyCode==17){realkey='\' Ctrl\''} if(event.keyCode==18){realkey='\' Alt\''}} alert('ns浏览器中键值:'+nkey+'\n'+'ie浏览器中键值:'+iekey+'\n'+'实际键为'+realkey);}document.onkeydown = keyDown;if(ns4){
document.captureEvents(Event.KEYDOWN);}</script></head><body>//Javascript Document<hr><center><h3>请按任意一个键。。。。</h3></center></body></html>