Scroll long pages on quora.com automatically and calculate Q Index of a user.

Q Index Quora

function pageScroll()
{
  window.scrollBy(0,100);//based on bandwidth, decrease for slower speeds
  if(($(window).scrollTop() >= $(document).height() - $(window).height() - 200) )
  {
    if(($(window).scrollTop() >= $(document).height() - $(window).height()))
    {
      counter++; 
      if(counter >200)//increase if no of answers is huge
      {
        alert("in");
        clearInterval(scrolldelay);
        var qindex = $('.voter_count').map(mapElems).toArray().sort(sortNumber).reduce(reduceQIndex,1);
        alert(qindex);
      }
      else
      {
        $('div[id*="_more"]').click();
        scrolldelay = setTimeout('pageScroll()',100);
      }
    }
    else
    {
      $('div[id*="_more"]').click();
      scrolldelay = setTimeout('pageScroll()',100);
    }
  }
  else
  {
    scrolldelay = setTimeout('pageScroll()',100);
  }
}

var counter = 0;
pageScroll();
function mapElems(index){return parseInt($(this).text())}
function sortNumber(a,b){return b - a}
function reduceQIndex(p,c,i,a){j = i+1;if (j > c){return p}else{return j}}