// JavaScript Document
        demo.innerHTML += demo.innerHTML;
        function mymove()
        {
        demo.scrollTop++;
        }
        
        function mym()
        {
            mym1 = setTimeout("mym()",1);
        if(demo.scrollTop==20)
        {
             clearTimeout(mym1);
           mym1 = setTimeout("mym()",3000)
        }
        
        if(demo.scrollTop==40)
        {
             clearTimeout(mym1);
           mym1 = setTimeout("mym()",3000)
        }
        
        if(demo.scrollTop>=60)
        {
             demo.scrollTop=0;
        }
        
        if(demo.scrollTop==0)
        {
             clearTimeout(mym1);
           mym1 = setTimeout("mym()",3000)
        }
        
        mymove();
        }
        var mym1 = setTimeout("mym()",1);