JSCode all of Brower 全局屏蔽网页右键功能 具体实现

[javascript]

<script type="text/javascript"> 
function clickIE4(){ 
        if (event.button==2){ 
                return false; 
        } 
} function clickNS4(e){ 
        if (document.layers||document.getElementById&&!document.all){ 
                if (e.which==2||e.which==3){ 
                        return false; 
                } 
        } 
} 
function OnDeny(){ 
        if(event.ctrlKey || event.keyCode==78 && event.ctrlKey || event.altKey || event.altKey && event.keyCode==115){ 
                return false; 
        } 
} 
if (document.layers){ 
        document.captureEvents(Event.MOUSEDOWN); 
        document.onmousedown=clickNS4; 
        document.onkeydown=OnDeny(); 
}else if (document.all&&!document.getElementById){ 
        document.onmousedown=clickIE4; 
        document.onkeydown=OnDeny(); 
} 
document.oncontextmenu=new Function("return false"); 
</script> 

<script type="text/javascript">
function clickIE4(){
        if (event.button==2){
                return false;
        }
}
function clickNS4(e){
        if (document.layers||document.getElementById&&!document.all){
                if (e.which==2||e.which==3){
                        return false;
                }
        }
}
function OnDeny(){
        if(event.ctrlKey || event.keyCode==78 && event.ctrlKey || event.altKey || event.altKey && event.keyCode==115){
                return false;
        }
}
if (document.layers){
        document.captureEvents(Event.MOUSEDOWN);
        document.onmousedown=clickNS4;
        document.onkeydown=OnDeny();
}else if (document.all&&!document.getElementById){
        document.onmousedown=clickIE4;
        document.onkeydown=OnDeny();
}
document.oncontextmenu=new Function("return false");
</script>