Bảo vệ dữ liệu

function clickIE() {if (document.all) {(message);return false;}}
function clickNS(e) {
if (document.layers||(document.getElementById&&!document.all)) {
   if (e.which==2||e.which==3) {(message);return false;}}
}
if (document.layers) {document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;}
else{document.onmouseup=clickNS;document.oncontextmenu=clickIE;}

document.oncontextmenu=new Function("return false")

function disableselect(e){return false}
function reEnable(){return true}

//if IE4+
document.onselectstart=new Function ("return false")

//if NS6
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}