//-------------------------------------------------------------
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function AgregarC(id){
	var url = 'comentarios.php?id='+id;
	var ancho = 500;
	var alto = 640;
	var nombre = 'comentario'+id;
	var izq = (screen.width - ancho) / 2;
	var arr = (screen.height - alto) / 2;
	window.open(url, nombre, 'width=' + ancho + ',height=' + alto + ',left=' + izq + ',top=' + arr + ',toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no');
}