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();
var objArray = new Array();

function slidedown(objList){
		var objArray = new Array();
		var objArray = objList.split(','); 
		//alert(objList);
		
		var i=0;
		for (i=0; i<=objArray.length-1; i++)
		{
			
			var newobjName=objArray[i];
			//alert(newobjName);
	
			
			if(moving[newobjName])
					return;
	
			if(document.getElementById(newobjName).style.display != "none")
					return; // cannot slide down something that is already visible
	
			moving[newobjName] = true;
			dir[newobjName] = "down";
			
			startslide(newobjName);/**/
		}
}

function slideup(objList){
		var objArray = new Array();
		var objArray = objList.split(','); 
		//alert(objArray.length);
		
		var i=0;
		for (i=0; i<=objArray.length-1; i++)
		{
			
			var newobjName=objArray[i];
			//alert(newobjName);
	
			//if(moving[newobjName])
              //  return;

			//if(document.getElementById(newobjName).style.display == "none")
					//return; // cannot slide up something that is already hidden
	
			moving[newobjName] = true;
			dir[newobjName] = "up";
			startslide(newobjName);
		
			
		}
        
}

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;
}