function rf(){
	return false; 
}
document.oncontextmenu = rf
function keydown(){
	//if(event.ctrlKey ==true || event.keyCode ==116||event.keyCode==115||event.keyCode ==93|| event.keyCode==13 ||event.keyCode==18){
	if(event.keyCode ==116||event.keyCode==115||event.keyCode ==93|| event.keyCode==13 ||event.keyCode==18 || event.keyCode == 122)
	{
		event.keyCode=0;
		return false;
	} 
}
document.onkeydown =keydown
function drag(){
	return false;
}
document.ondragstart=drag