var DDSPEED = 10;
var DDTIMER = 5;

// main function to handle the mouse events //
function ddMenu(id,d){

  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  var w = document.getElementById(id);

clearInterval(c.timer);
  if(d == 1){
	  w.style.height = '400px';
    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 = '3px';
    }
    c.timer = setInterval(function(){ddSlide(c,h,w,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c,h,w)},10);
	
  }
}

// collapse the menu //
function ddCollapse(c,h,w){
  c.timer = setInterval(function(){ddSlide(c,h,w,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  var w = document.getElementById(id);
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,h,w,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,h,w,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) + ')';
  //document.getElementById("debug").value = c.id;
  if((currh < 5 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
	 //clearTimeout(h.timer);
	if (currh < 5)
	{
		//var wref = document.getElementById(LASTMENU);
		w.style.height = '22px';
	}
  }
}

function rMenu(id,imgsrc)
{
	document.getElementById(id).src = imgsrc;
}