function returnEventFalse(){
event.returnValue = false;
}
function returnEventTrue(){
event.returnValue = true;
}
document.oncontextmenu = returnEventFalse;
document.ondragstart = returnEventFalse;
document.onselectstart = returnEventFalse;
setInterval(InvMouseKey,200);
function InvMouseKey(){
if( document.oncontextmenu == null ){
document.oncontextmenu = returnEventFalse;
}
if( document.ondragstart == null ){
document.ondragstart = returnEventFalse;
}
if( document.onselectstart == null ){
document.onselectstart = returnEventFalse;
}
}
