var timerlen = 5;
var slideAniLen = 250;

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

function slideRight(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] = "Right";
        startslide(objname);
}

function slideLeft(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] = "Left";
        startslide(objname);
}

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

        endWidth[objname] = parseInt(obj[objname].style.width);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "Right"){
            obj[objname].style.width = "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 * endWidth[objname]);
                if(dir[objname] == "Left")
                        d = endWidth[objname] - d;

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

        return;
}

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

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

            obj[objname].style.width = endWidth[objname] + "px";

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

        ContentFrame.centerWin();
      
        return;
}