function showAndGo(show, go) {
    var elem = document.getElementById("list" + show);
    // If listn actually exist, play with it.
    if (elem) {
        elem.className = "visible";
    }
    // Now, go to that anchor!
    window.location.hash = go;    
}

// Example use:
// This would so list with is "list1" and go to anchor "#1"
showAndGo('1', '1');