var timerlen = 5;
var slideAniLen = 120;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var startHeight = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();
var up = new Array();
var down = new Array();
var downs = new Array();

function slidedown(objname,containername){
        obj[objname] = document.getElementById(objname);
        if(moving[objname]) { return; }
        if(obj[objname].style.display != "none") { return; }
	if (containername == undefined) { containername = ''; }
	obj[objname].style.overflow = 'hidden';
	if (containername != '') {
//		obj[containername] = document.getElementById(containername);
//		obj[containername].style.overflow = 'hidden';
	}
	slideup(downs[containername],containername);
	downs[containername] = objname;
        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname,containername);
}

function slideup(objname,containername){
        obj[objname] = document.getElementById(objname);
 //       if(moving[objname]) { return; }
        if(document.getElementById(objname).style.display != "block") { return; }
	if (containername == undefined) { containername = ''; }
	obj[objname].style.overflow = 'hidden';
	if (containername != '') {
//		obj[containername] = document.getElementById(containername);
//		obj[containername].style.overflow = 'hidden';
	}
        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname,containername);
}

function startslide(objname,containername){

//	endHeight[objname] = (endHeight[objname]?endHeight[objname]:parseInt(obj[objname].style.height));
	endHeight[objname] = (endHeight[objname]?endHeight[objname]:parseInt(obj[objname].style.height));
	endHeight[objname] = (!isNaN(endHeight[objname])?endHeight[objname]:obj[objname].offsetHeight);
	startTime[objname] = (new Date()).getTime();

	if (containername != '') {
		obj[containername] = document.getElementById(containername);
		startHeight[containername] = (startHeight[containername]?startHeight[containername]:parseInt(obj[containername].style.height));
		startHeight[containername] = (!isNaN(startHeight[containername])?startHeight[containername]:obj[containername].offsetHeight);

		endHeight[containername] = (endHeight[containername]?endHeight[containername]:parseInt(obj[containername].style.height));
		endHeight[containername] = (!isNaN(endHeight[containername])?endHeight[containername]:obj[containername].offsetHeight);
		up[containername] = (up[containername]?up[containername]:0);
		down[containername] = (down[containername]?down[containername]:0);
	        if(dir[objname] == "down"){
			endHeight[containername] += parseInt(obj[objname].style.height);
			down[containername] += endHeight[objname];
		} else {
			endHeight[containername] -= parseInt(obj[objname].style.height);
			up[containername] += endHeight[objname];
		} 
	}
        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
		var container = document.getElementById(objname).parentNode.parentNode;
		for (var ele in container.childNodes) {
			if (container.childNodes[ele].firstChild) {

				var className = container.childNodes[ele].firstChild.className;

				if (container.childNodes[ele].id == document.getElementById(objname).parentNode.id) {
						container.childNodes[ele].firstChild.setAttribute('class',className.replace('inactive','active'));
						container.childNodes[ele].firstChild.setAttribute('className',className.replace('inactive','active'));
				} else {
					if (className.indexOf('inactive') == -1) {
						container.childNodes[ele].firstChild.setAttribute('class',className.replace('active','inactive'));
						container.childNodes[ele].firstChild.setAttribute('className',className.replace('active','inactive'));
					}
				}
			}
		}
        }

        obj[objname].style.display = "block";
        timerID[objname] = setInterval('slidetick(\'' + objname + '\',\'' + containername + '\');',timerlen);
}

function slidetick(objname,containername){
        var elapsed = (new Date()).getTime() - startTime[objname];
        if (elapsed > slideAniLen)
                endSlide(objname,containername)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
		if (containername != '') {
			var e = (up[containername] - down[containername]) * elapsed / slideAniLen;
			obj[containername].style.height = (startHeight[containername] - e) + "px";
		}
                if(dir[objname] == "up") {
                        d = endHeight[objname] - d;
		}
                obj[objname].style.height = d + "px";
        }
        return;
}

function endSlide(objname,containername){
      clearInterval(timerID[objname]);
		
        if(dir[objname] == "up") {
                obj[objname].style.display = "none";
		up[objname] -= endHeight[objname];
	} else {
		down[objname] -= endHeight[objname];
	}

	if (containername != '') {
		obj[containername].style.height = endHeight[containername] + "px";
		if(dir[objname] == "up") {
			up[containername] -= endHeight[objname];
		} else {
			down[containername] -= endHeight[objname];
		}
//		delete(startHeight[containername]);
//		delete(endHeight[containername]);
	}
        obj[objname].style.height = endHeight[objname] + "px";
	obj[objname].style.overflow = '';
	if (containername != '') {
		obj[containername].style.overflow = '';
	}
	
        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
//        delete(endHeight[objname]);
//        delete(obj[objname]);
        delete(dir[objname]);

        return;
}