javascript detect scroll to bottom of page

//scroll to the bottom of "#myDiv"
var myDiv = document.getElementById("myDiv");
    myDiv.scrollTop = myDiv.scrollHeight;

$("#mydiv").scrollTop($("#mydiv")[0].scrollHeight);

var objDiv = document.getElementById("your_div");
objDiv.scrollTop = objDiv.scrollHeight;

window.scrollTo(0,document.body.scrollHeight);

function scrolled(e) {
  if (myDiv.offsetHeight + myDiv.scrollTop >= myDiv.scrollHeight) {
    scrolledToBottom(e);
  }
}

//For a smooth scroll using jQuery animate
$('#DebugContainer').stop().animate({
  scrollTop: $('#DebugContainer')[0].scrollHeight
}, 800);