function scrollIt(num) {
pos = num*overHeight;
pos = pos+10;
document.getElementById('writing').style.marginTop = "-"+pos;

}

function setScroller(boxheight, textheight) {
alert("setting..");
overHeight = parseInt(textheight)-parseInt(boxheight);
alert(overHeight);
  // <![CDATA[
new Control.Slider('dragger','line',{axis:'vertical',
        onSlide:function(v){scrollIt(v)},
        onChange:function(v){}});
  // ]]>


}