if(navigator.appName.indexOf("Microsoft")!=-1) w = document.body.offsetWidth; else w = window.innerWidth;

witch=0;
x=-300;

function setx()
{
        d=w/2-157;
        if(witch==0)witch=document.getElementById('witchdiv');
        witch.style.backgroundPosition=x + "px";
        x+=10;
        if(x<d)
        {
                setTimeout("setx()",30);
        }
        else
        {
                witch=document.getElementById('witch2');
                witch.style.display='block';

                witch=document.getElementById('outerdiv');
                witch.style.display='none';
        }
}