Image gets jammed (a bit) while moving

[BarrMan]

Hey,
I'm trying to make a moving image inside a frame. And it works.
The only problem is, that while the images moves, it gets jammed on some parts and moves on.

I'd like the image to have a smooth motion.

Here's a link so you could see it in action:
http://www.imri-tech.net/splusw/

Here's the code:

function moveImage()
{
    var p = Math.PI*2;
    var st = new Date().getTime();
    var dir=1;
    var frq = 1/3000;
    var s = 0;
    var obj = $("moving_image");
    window.setInterval(
    function()
    {
        var et = new Date().getTime()-st;
        var d = et*frq;
        /*if(et*5000>7000)
            $("moving_image").src = */
            if(s==0)
                obj.style.top = -100+d*100+"px";
            if(s==1)
                obj.style.left = -152+d*152+"px";
            if(s==2)
                obj.style.top = -d*100+"px";
            if(s==3)
                obj.style.left = -d*152+"px";
            if(d>=1)
            {
                s++;
                st = new Date().getTime();
            }
            if(s>3)
                s=0;
        
    },5);
}

Thanks!

[Millenia]

Isn't it just lagging? I don't think you could fix it. Try using something like Flash for animations instead.