var tickerPos = 0;
var tickerWidth = 0;

function startTicker() {
    var divMarquee = document.getElementById("marquee");
    var divSlider = document.getElementById("marquee_slider");

    tickerWidth = divSlider.offsetWidth;
    tickerPos = divMarquee.offsetWidth;
    divSlider.style.marginLeft = tickerPos + "px";
    setTimeout("scrollTicker()", 70);
}

var timeout = '';

function scrollTicker() {
    clearTimeout(timeout);

    var divMarquee = document.getElementById("marquee");
    var divSlider = document.getElementById("marquee_slider");

    if (tickerPos <= -tickerWidth) {
        tickerPos = divMarquee.offsetWidth;
    }
    else {
        tickerPos -= 3;
    }

    divSlider.style.marginLeft = tickerPos + "px";
    timeout = setTimeout("scrollTicker()", 40);
}