function Mostrar(id,ver)
{
	document.getElementById(id).style.display = ver ? "block" : "none";
}

//////////

function Confirmar(url,pregunta)
{
	if (confirm(pregunta)) window.location = url;
}

//////////

function Ir_a_URL(url)
{
   window.location=url; 
}

//////////

function Sombrear(id,somb)
{
	document.getElementById("cont" + id).style.backgroundColor = somb ? '#EEE' : ''
}

//////////

function AbrirVentana(n,url,tamX,tamY,centrar,scroll)
{
	if (centrar) {
		px = (screen.width - tamX) >> 1;
		py = (screen.height - tamY) >> 1;
		pos = ",left="+px+",top="+py;
	}
	else pos = "";
	scrl = (scroll) ? ",scrollbars=1" : "";
	window.open(url, "id_"+n, "width="+tamX+",height="+tamY+pos+scrl);
}