// JavaScript Document

// used to open and close list menus
function toggle(id){
    ul = "ul_" + id;
    img = "img_" + id;
    ulElement = document.getElementById(ul);
    imgElement = document.getElementById(img);
    if (ulElement){
            if (ulElement.className == 'closed'){
                    ulElement.className = "open";
					var myRegExp = /folder_grey.gif/;
					tmp = imgElement.src;
					imgElement.src = tmp.replace(myRegExp, "folder_grey_open.gif");
                    }else{
                    ulElement.className = "closed";
					var myRegExp = /folder_grey_open.gif/;
					tmp = imgElement.src;
					imgElement.src = tmp.replace(myRegExp, "folder_grey.gif");
                    }
            }
    }

function init_BookMenu(prevState){
    switch(prevState){
        case "1":
            toggle('item1');
            break;
        case "2":
            toggle('item2');
            break;
        case "3":
            toggle('item3');
            break;
        case "3a":
            toggle('item3');
            toggle('item3_1');
            break;
        case "3b":
            toggle('item3');
            toggle('item3_2');
            break;
        case "4":
            toggle('item4');
            break;
        case "4a":
            toggle('item4');
            toggle('item4_1');
            break;
        case "4b":
            toggle('item4');
            toggle('item4_2');
    }
}

function init_AddinMenu(prevState){
    switch(prevState){
        case "1":
            toggle('item1');
            break;
        case "2":
            toggle('item2');
            break;
    }
}