// JavaScript Document
var scroller = {
  init:   function() {
  
	scroller.docH = document.getElementById("content").offsetHeight;
    scroller.contH = document.getElementById("container").offsetHeight;
    scroller.scrollAreaH = document.getElementById("scrollArea").offsetHeight;

scroller.scrollH = (scroller.contH * scroller.scrollAreaH) / scroller.docH;
//if(scroller.scrollH < 15) scroller.scrollH = 15;
document.getElementById("scroller").style.height = Math.round(scroller.scrollH) + "px";

scroller.scrollDist = Math.round(scroller.scrollAreaH-scroller.scrollH);

Drag.init(document.getElementById("scroller"),null,0,0,-1,scroller.scrollDist);

document.getElementById("scroller").onDrag = function (x,y) {
      var scrollY = parseInt(document.getElementById("scroller").style.top);
      var docY = 0 - (scrollY * (scroller.docH - scroller.contH) / scroller.scrollDist);
      document.getElementById("content").style.top = docY + "px";
    }
  }
}

onload = scroller.init;