var DDSPEED = 10;
var DDTIMER = 15;
var OFFSET = 0;
var ZINT = 100;

function ddMenu(id,d)
{
    var h = document.getElementById(id + '-ddheader');
    var c = document.getElementById(id + '-ddcontent');
    var l = document.getElementById(id + '-ddlink');
    clearInterval(c.timer);
    if(d == 1)
    {
        clearTimeout(h.timer);
        c.style.display = 'block';
                
        if(c.maxh && c.maxh <= c.offsetHeight)
        {
            return;
        }
        else if(!c.maxh)
        {
            c.style.left = (h.offsetWidth + OFFSET) + 'px';
            c.style.height = 'auto';
            c.maxh = c.offsetHeight;
            c.style.height = '0px';
        }
        
        ZINT = ZINT + 1;
        c.style.zIndex = ZINT;
        c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
    }
    else
    {
        h.timer = setTimeout(function(){ddCollapse(c)},50);
    }
}

function ddCollapse(c)
{
    c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

function cancelHide(id)
{
    var h = document.getElementById(id + '-ddheader');
    var c = document.getElementById(id + '-ddcontent');
    clearTimeout(h.timer);
    clearInterval(c.timer);
    if(c.offsetHeight < c.maxh)
    {
        c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
    }
}

function ddSlide(c,d)
{
    var currh = c.offsetHeight;
    var dist;
    
    if(d == 1)
    {
        dist = Math.round((c.maxh - currh) / DDSPEED);
    }
    else
    {
        dist = Math.round(currh / DDSPEED);
    }
    
    if(dist <= 1 && d == 1)
    {
        dist = 1;
    }
    
    c.style.height = currh + (dist * d) + 'px';
    c.style.opacity = currh / c.maxh;
    c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
    
    if(currh > (c.maxh - 2) && d == 1)
    {
        clearInterval(c.timer);
    }
    else if(dist < 1 && d != 1)
    {
        clearInterval(c.timer);
        c.style.display = 'none';
    }
}

function ContainerMouseOverOut(id,d)
{
    if (id == mainMenuItem) return;
    var h = document.getElementById(id + '-ddheader');
    var l = document.getElementById(id + '-ddlink');
    
    if(d == 1)
    {
        l.style.color = '#000000';
        h.className = 'upperddCurrent';
    }
    else
    {
        l.style.color = '#ffffff';
        h.className = 'upperdd';
    }
}

var mainMenuItem = '';

function SetMainMenuItem(id)
{
    ContainerMouseOverOut(id, 1);
    mainMenuItem = id;
}