// JavaScript Document
function currentYPosition() {
          // Firefox, Chrome, Opera, Safari
          if (self.pageYOffset) return self.pageYOffset;
          // Internet Explorer 6 - standards mode
          if (document.documentElement && document.documentElement.scrollTop)
              return document.documentElement.scrollTop;
          // Internet Explorer 6, 7 and 8
          if (document.body.scrollTop) return document.body.scrollTop;
          return 0;
      }

function elmYPosition(eID) {
          var elm = document.getElementById(eID);
          var y = elm.offsetTop;
          var node = elm;
          while (node.offsetParent && node.offsetParent != document.body) {
              node = node.offsetParent;
              y += node.offsetTop;
          } return y;
      }
function smoothScroll(eID) {
          var startY = currentYPosition();
          var stopY = elmYPosition(eID);
          var distance = stopY > startY ? stopY - startY : startY - stopY;
          if (distance < 100) {
              scrollTo(0, stopY); return;
          }
          var speed = Math.round(distance / 50);
          var step = Math.round(distance / 90);
          var leapY = stopY > startY ? startY + step : startY - step;
          var timer = 0;
          if (stopY > startY) {
              for ( var i=startY; i<stopY; i+=step ) {
                  setTimeout("window.scrollTo(0, "+leapY+")", timer * speed);
                  leapY += step; if (leapY > stopY) leapY = stopY; timer++;
              } return;
          }
          for ( var i=startY; i>stopY; i-=step ) {
              setTimeout("window.scrollTo(0, "+leapY+")", timer * speed);
              leapY -= step; if (leapY < stopY) leapY = stopY; timer++;
          }
      }