document.onselectstart=function(){return false}
document.oncontextmenu=function(){return false}
document.oncopy =  function() {return false}

var isCtrl = false;
document.onkeyup=function(e){
	if(e.which == 17) isCtrl=false;
}
document.onkeydown=function(e){
	if(e.which == 17) isCtrl=true;
	if(e.which == 83 && isCtrl == true) {
		//run code for CTRL+S -- ie, save!
		return false;
	}
	if(e.which == 65 && isCtrl == true) {
		//run code for CTRL+A -- ie, save!
		return false;
	}
	if(e.which == 67 && isCtrl == true) {
		//run code for CTRL+C
		return false;
	}
}