function changeNav(newNav)
{
    switch(newNav)
    {
    case "MoreInfo":
        unLoad();
        document.getElementById("MoreInfoNav").style.display = "block";
        break;
    case "Tools":
        unLoad();
        document.getElementById("Tools").style.display = "block";
        break;
    case "Evidence":
        unLoad();
        document.getElementById("Evidence").style.display = "block";
        break;
    default:
        break;        
    }
}

function unLoad()
{
    document.getElementById("MoreInfoNav").style.display = "none";    
    document.getElementById("Tools").style.display = "none";  
    document.getElementById("Evidence").style.display = "none";
}