var DDSPEED = 10;

var DDTIMER = 15;

var OFFSET = -2;

var ZINT = 100;



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);
		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';

		}

}