var curdate = new Date(); 
var year = curdate.getFullYear();
var message=("Función deshabilitada.\nŠ " + year + " FUGAQUA, S.L.\nTodos los derechos reservados."); 

function Elimina_BD (e){
	if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
	{
		alert (message);
		return false;
	}
	else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2))
	{
		alert (message);
	}
}

function Detecta_Tecla(){
	if (event.ctrlKey)
	{
		event.ctrlkey=0;
		return false;
	}
	else if (event.altKey)
	{
		event.altKey=0;
		return false;
	}
}

document.onmousedown=Elimina_BD;
document.onkeydown = Detecta_Tecla;
document.oncontextmenu=new Function("return false");