// JavaScript Document
browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );
version = "n2";

if ( browserName == "Netscape" && browserVer >= 3 ) version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4 ) version = "e4";
if ( version == "n3" || version == "e4" )
{

inicioON = new Image(30,50);
inicioON.src = "im/menu/inicio1.jpg";
nsrON = new Image(35,55);
nsrON.src = "im/menu/nsr1.jpg";
historialON = new Image(30,50);
historialON.src = "im/menu/historial1.jpg";
ofertasON = new Image(40,60);
ofertasON.src = "im/menu/ofertas1.jpg";

contactoON = new Image(35,55);
contactoON.src = "im/menu/contacto1.jpg";

inicioOFF = new Image(90,90);
inicioOFF.src = "im/menu/inicio.jpg";
nsrOFF = new Image(95,95);
nsrOFF.src = "im/menu/nsr.jpg";
historialOFF = new Image(95,95);
historialOFF.src = "im/menu/historial.jpg";
ofertasOFF = new Image(95,95);
ofertasOFF.src = "im/menu/ofertas.jpg";
contactoOFF = new Image(95,95);
contactoOFF.src = "im/menu/contacto.jpg";

}

function b_On ( imgName )
{
        if ( version == "n3" || version == "e4" )
        {
                activeButOn = eval ( imgName + "ON.src" );
                document [imgName].src = activeButOn;
        }
}

function b_Off ( imgName )
{
        if ( version == "n3" || version == "e4" )
        {
                inactiveButOff = eval ( imgName + "OFF.src" );
                document [imgName].src = inactiveButOff;
        }
}