<input onkeypress="return event.keyCode>=48&&event.keyCode<=57" onpaste="return !clipboardData.getData('text').match(/\D/)" style="ime-mode:disabled" ondragenter="return false">
1.只允许输入数字
2.禁止汉字
3.允许paste，但不破坏clipboard
4.禁止drag
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<script language="JavaScript" type="text/JavaScript">
function HideMenu()
{
}
</script>
<body onmousemove='HideMenu()' oncontextmenu="return false" ondragstart="return false" onselectstart ="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false" onmouseup="document.selection.empty()">
禁止复制选择等................
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<script language="JavaScript" type="text/JavaScript">
//双击鼠标滚动屏幕的代码
var currentpos,timer;
function initialize()
{
timer=setInterval ("scrollwindow ()",30);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc
document.ondblclick=initialize
</script>