if(parseInt(navigator.appName.version)<=3) imagen_crucero="images/bg.gif";

		var browserName = navigator.appName;
       	var browserVer = parseInt(navigator.appVersion);
        if (browserName == "Netscape" && browserVer > 3) version = "n4";
        else if (browserName == "Netscape" && browserVer == 3) version = "n3";
        else if (browserName == "Netscape" && browserVer <= 2) version = "n2";
        else if (browserName == "Microsoft Internet Explorer" && browserVer > 3) version = "e4";
                else if (browserName == "Microsoft Internet Explorer" && browserVer <= 3) version = "e3";
                else version = "other";
				
		

var vent= null;

function abrir_ventana(url,nombre){
	if (version == "e4") {var xMax = screen.width, yMax = screen.height;} 
	if (version == "n4") {var xMax = screen.availWidth, yMax = screen.availHeight;}
	if ((version == "e3")||(version == "n3") ||(version == "n2")||(version == "other")){xMax = 640, yMax=480;}



if (nombre=="contacto"){
var xOffset = (xMax - 380)/2, yOffset = (yMax -330)/2;
vent =window.open(url,nombre,'width=380,height=330,directories=no,location=no,menubar=no,scrollbars=yes,status=yes,toolbar=no,resizable=no,left='+xOffset+',top='+yOffset+',screenX='+xOffset+',screenY='+yOffset);
if ((version == "e4")||(version == "n4") ){vent.focus();}
return;
}



if (nombre=="portafolio"){
var xOffset = (xMax - 796)/2, yOffset = (yMax -574)/2;
vent =window.open(url,nombre,'width=796,height=574,directories=no,location=no,menubar=no,scrollbars=yes,status=yes,toolbar=no,resizable=no,left='+xOffset+',top='+yOffset+',screenX='+xOffset+',screenY='+yOffset);
if ((version == "e4")||(version == "n4") ){vent.focus();}
return;
}



}



function cerrar_ventana(){


if (vent!=null  && !vent.closed){






	if(vent.frm=="frameset"){

		if (vent.contenido.vent!=null  && !vent.contenido.vent.closed){
			vent.contenido.vent.close();
		}
	}
	vent.close();
}




}