function slidecontrol()
{
    backforward.np = -1;
    if (backforward.p == "play")
    {    
        t.set = 2;
        backforward.p = 'pause';
        document.getElementById('playit').innerHTML = "start slideshow";        
    }
    else
    {
        
        t.set = -1;
        backforward.p = 'play';
        document.getElementById('playit').innerHTML = "stop slideshow";
    }
}

backforward.jump = -1;
backforward.move = -1;

function SetJump(numb)
{
    t.set = 2;

    if (backforward.p == "play")
    {
        backforward.jump = parseInt(numb);
    }
    else
    {
        backforward.move = parseInt(numb);
    }

}