var DDSPEED = 10;
var DDTIMER = 15;
var OFFSET = -2;
var ZINT = 100;

var BASE = '';
var BASESHOW = 0;
var ACTUSHOW = 0;

function setBase(id) {
	          BASE = id;
	          BASESHOW = 1;
	          ddMenu(BASE, 1);
}

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);
  			
  	ACTUSHOW = 1;
    
  			if(id != BASE && BASE != '' && BASESHOW == 1) {
  					var b = document.getElementById(BASE + '-ddcontent');
    				b.style.display = 'none';
  					BASESHOW = 0;
  			}
  }else{
		if(id != BASE && BASE != '' && BASESHOW == 0 && ACTUSHOW == 1) {
	          ddMenu(BASE, 1);
	          BASESHOW = 1;
  		}
  		if(BASE == '' || id != BASE) { 
    			h.timer = setTimeout(function(){ddCollapse(c)},50);
  				ACTUSHOW = 0;
    	}
  }
}

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');
  
  			if(id != BASE && BASE != '' && BASESHOW == 1) {
  					var b = document.getElementById(BASE + '-ddcontent');
    				b.style.display = 'none';
  					BASESHOW = 0;
  			}
  	if(id != BASE && BASE != '') {
  		ACTUSHOW = 1;	
  	}
  			
	  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';
  }
}