function checkKey()
{
    var key = window.event.keyCode;
    if (window.event.shiftKey)
    {
        if (key == 65 || key == 97)
        {
            ShowAll();
        }
        else if (key == 67 || key == 99)
        {
            CloseAll();
        }
    }
}

function ShowAll()
{
    for(var i = 0; i < document.all.length; i++)
    {
       if (document.all(i).className == "collapsed")
       {
        document.all(i).className = "expanded" ;
       }
    }
}

function CloseAll()
{
    for(var i = 0; i < document.all.length; i++)
    {
       if (document.all(i).className == "expanded")
       {
        document.all(i).className = "collapsed" ;
       }
    }
}

function outliner()
{
    var child = document.all[event.srcElement.getAttribute("child",false)];
    if (null != child){
        if(child.className == "collapsed")
        {
            child.className = "expanded";
            return;
        }
        if(child.className == "expanded")
        {
            child.className = "collapsed";
            return;
        }
    }
}