var DDSPEED = 2; var DDTIMER = 2; function ddMenu(id, d) {
    var h = document.getElementById(id + '-ddheader'); var c = document.getElementById(id + '-ddcontent'); clearInterval(c.timer); if (d == 1) {
        clearTimeout(h.timer); if (c.maxh && c.maxh <= c.offsetHeight) { return }
        else if (!c.maxh) { c.style.display = 'block'; c.style.height = 'auto'; c.maxh = c.offsetHeight; c.style.height = '0px'; }
        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 < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)) { clearInterval(c.timer); } 
}