var DDSPEED=10;
var DDTIMER=15;
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);
}
}