// Copyright 2003-2008, liveBooks, Inc., All Rights Reserved 

var current_page = new Array();

function f_start(forcePageId, artistId) {
    if(forcePageId == null || forcePageId == '')
        forcePageId = 1;
    if (!f_is_started(artistId)) f_start_from(forcePageId, artistId);
}

function f_is_started(artistId) {
    return (current_page[artistId] != null);
}

function f_start_from(id, artistId) {
   current_page[artistId] = null;
   f_show_page(id, artistId);
}

function f_show_page(pageId, artistId) {
    var showpage = document.getElementById("page_" + pageId + "_" + artistId);
    if(showpage) {
        if (current_page[artistId] != null) {
            showHide("page_" + current_page[artistId] + "_" + artistId, "hide");
        }
        showHide("page_" + pageId + "_" + artistId, "show");
        current_page[artistId] = pageId;
    }
    // show/hide prev link
    prevShowType = (document.getElementById("page_" + (pageId - 1) + "_" + artistId)) ? "show" : "hide";
    showHide("prev_link_" + artistId, prevShowType);
    
    // show/hide prev link
    nextShowType = (document.getElementById("page_" + (pageId + 1) + "_" + artistId)) ? "show" : "hide";
    showHide("next_link_" + artistId, nextShowType);
    
    if(prevShowType == "show" && nextShowType == "show")
        showHide("delim_" + artistId, "show");
}

function showHide(elmName, showType) {
    if(showType == null || showType == '')
        showType = "show";
    var elm = document.getElementById(elmName);
    if(elm) {
        if(showType == "hide") {
            elm.style.display = "none";
            elm.style.visibility = "hidden";
        } else {
            elm.style.display = "inline";
            elm.style.visibility = "visible";
            elm.style.position = "static";
        }
    }

}