function AbrirVentana(sPagina, nTamX, nTamY)

{

	var nAnchura, nAltura, nTop, nLeft, sPropsVentana;

	nAnchura = screen.availWidth;

	nAltura = screen.availHeight;

	nTop = (nAltura - nTamY - 30) * .5;

	nLeft =  (nAnchura - nTamX - 10) * .5;

	sPropsVentana  = 'width=' + nTamX + ',height=' + nTamY;

	sPropsVentana += ',top=' + nTop + ',left=' + nLeft;

	sPropsVentana += ',scrollbars=no,menubar=no,toolbar=no,directories=no,location=no,status=no';

	return(window.open(sPagina,'',sPropsVentana));

}



function AbrirVentana2(sPagina, nTamX, nTamY)

{

	var nAnchura, nAltura, nTop, nLeft, sPropsVentana;

	nAnchura = screen.availWidth;

	nAltura = screen.availHeight;

	nTop = (nAltura - nTamY - 30) * .5;

	nLeft =  (nAnchura - nTamX - 10) * .5;

	sPropsVentana  = 'width=' + nTamX + ',height=' + nTamY;

	sPropsVentana += ',top=' + nTop + ',left=' + nLeft;

	sPropsVentana += ',scrollbars=yes,menubar=no,toolbar=no,directories=no,location=no,status=no';

	return(window.open(sPagina,'',sPropsVentana));

}