var timerlen = 25;
var slideAniLen = 450;

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

        obj[objname] = document.getElementById(objname);
         obj[objname].style.display = "block";
        //startslide(objname);
}

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

       obj[objname] = document.getElementById(objname);
         obj[objname].style.display = "none";
        

}

/*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;
}*/