function abrirPopUp(sUrl)
{
img = new Image();
img.src=sUrl;
var ancho = img.width;
var alto = img.height;
//alert(ancho + " - " + alto);
var v1 = window.open("","imagen","width="+ancho+",height="+alto+"resize:no,menubar:no,toolbar:no");
v1.close();
v1 = window.open("","imagen","width="+ancho+",height="+alto+"resize:no,menubar:no,toolbar:no");
with(v1.document)
{
write("");
write("");
write("Ampliación");
write("");
write("");
write("");
write("![](\"")
");
write("");
write("");
}
}