GBloghelper

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>

<style>
.ks-back-to-top {
    position: fixed;
    bottom: 2em;
    right: 15px;
    text-decoration: none;
    padding: 1em;
    display: none;
    cursor:pointer;
}
</style>
<img class="ks-back-to-top" src="Image Url" />
<script type="text/javascript">
/*****www.crawlist.net***/
jQuery(document).ready(function() {
    var offset = 220;
    var duration = 500;
    jQuery(window).scroll(function() {
        if (jQuery(this).scrollTop() > offset) {
            jQuery('.ks-back-to-top').fadeIn(duration);
        } else { //www.crawlist.blogspot.com
            jQuery('.ks-back-to-top').fadeOut(duration);
        }
    });

    jQuery('.ks-back-to-top').click(function(event) {
        event.preventDefault();
        jQuery('html, body').animate({scrollTop: 0}, duration);
        return false;
    })
});
</script>