$thumbScroller.mousemove(function(e){
var mouseCoords=(e.pageY - this.offsetTop);
var mousePercentY=mouseCoords/sliderHeight;
var destY=-(((totalContent-(sliderHeight-itemHeight))-sliderHeight)*(mousePercentY));
var thePosA=mouseCoords-destY;
var thePosB=destY-mouseCoords;
if(mouseCoords>destY){
$thumbScroller_container.css("top",-thePosA);
}
if(mouseCoords