<html>
<head>
<script type="text/javascript">
function upLoadKey(e){
((document.all) ? true:false) == true ? (window.event.returnValue = false
): e.preventDefault()
;
}
</script>
</head>
<body>
<input
name="textfield3" type="file" class="input" id="textfield3" size="30"
value="" onkeydown="upLoadKey(event);" onpaste="return false;"
onmousedown="document.oncontextmenu = function() { return false;}"
onmouseout="document.oncontextmenu = function() { return true;}" style =
"ime-mode:disabled" />
<div>
window.event.returnValue = false? 屏蔽ie键盘输入
<br>
e.preventDefault()? 屏蔽firefox键盘输入
<br>
http://www.my400800.cn
</div>
</body>
</html>