HTML 中什么命令可以禁止鼠标右键点击？

<script language="JavaScript">

document.oncontextmenu=new Function("event.returnValue=false")//禁止右键功能,单击右键将无任何反应

document.onselectstart=new Function("event.returnValue=false")//禁止先择,也就是无法复制

</script>

功能：禁止右键、禁选择、禁粘贴、禁shift、禁ctrl、禁alt<script language="JavaScript">

<!--

function key(){

if(event.shiftKey){

window.close()}

//禁止Shift

if(event.altKey){

window.close()}

//禁止Alt

if(event.ctrlKey){

window.close()}

//禁止Ctrl

return false}

document.onkeydown=key

if (window.Event)

document.captureEvents(Event.MOUSEUP)

function nocontextmenu(){

event.cancelBubble = true

event.returnValue = false

return false}

function norightclick(e){

if (window.Event){

if (e.which == 2 || e.which == 3)

return false}

else

if (event.button == 2 || event.button == 3){

event.cancelBubble = true

event.returnValue = false

return false}

}

//禁右键

document.oncontextmenu = nocontextmenu // for IE5+

document.onmousedown = norightclick // for all others

//-->

</script>

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