var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}
function toggleSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
  }else{
    // div is not hidden, so slide up
    slideup(objname);
  }
}

//var timerlen = 5;
//var slideAniLen = 500;

//var timerID = new Array();
//var startTime = new Array();
//var obj = new Array();
//var endHeight = new Array();
//var moving = new Array();
//var dir = new Array();

//function slidedown(objname){
//  if(moving[objname])
//    return;
// 
//  if(document.getElementById(objname).style.display != “none”)
//    return; // cannot slide down something that is already visible
// 
//  moving[objname] = true;
//  dir[objname] = “down”;
//  startslide(objname);
//}
// 
//function slideup(objname){
//  if(moving[objname])
//    return;
// 
//  if(document.getElementById(objname).style.display == “none”)
//    return; // cannot slide up something that is already hidden
// 
//  moving[objname] = true;
//  dir[objname] = “up”;
//  startslide(objname);
//}

//function startslide(objname){
//  obj[objname] = document.getElementById(objname);
// 
//  endHeight[objname] = parseInt(obj[objname].style.height);
//  startTime[objname] = (new Date()).getTime();
// 
//  if(dir[objname] == “down”){
//    obj[objname].style.height = “1px”;
//  }
// 
//  obj[objname].style.display = “block”;
// 
//  timerID[objname] = setInterval(’slidetick(” + objname + ”);’,timerlen);
//}

//function slidetick(objname){
//  var elapsed = (new Date()).getTime() - startTime[objname];
// 
//  if (elapsed > slideAniLen)
//    endSlide(objname)
//  else {
//    var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
//    if(dir[objname] == “up”)
//      d = endHeight[objname] - d;
// 
//    obj[objname].style.height = d + “px”;
//  }
// 
//  return;
//}

//function endSlide(objname){
//  clearInterval(timerID[objname]);
// 
//  if(dir[objname] == “up”)
//    obj[objname].style.display = “none”;
// 
//  obj[objname].style.height = endHeight[objname] + “px”;
// 
//  delete(moving[objname]);
//  delete(timerID[objname]);
//  delete(startTime[objname]);
//  delete(endHeight[objname]);
//  delete(obj[objname]);
//  delete(dir[objname]);
// 
//  return;
//}