4 Binom custom events in the wild

[megs]

I found these in a nice lander. Thought I'd share in case someone else finds them useful.

<script type="text/javascript">
var scroll = 0;
window.onscroll =  function(){
if( scroll != 1 ){
     scroll = 1;
     var o = document.createElement("img");
     o.src = "https://domain.com/click.php?event3=1";
     }
}
</script>

This is one checks for scrolling

<script>
var img  = document.createElement('img');
img.onload = function() {
   var o = document.createElement("img");
     o.src='https://domain.com/click.php?event2=1';
};
img.onerror = function() {
   var o = document.createElement("img");
     o.src='https://domain.com/click.php?event2=0';
};
img.src="https://www.facebook.com/login.php?next=https%3A%2F%2Fwww.facebook.com%2Ffavicon.ico"
</script>

Does this counts fb pixels placed?

<script>
     if (typeof(window.orientation)=="undefined")
     {
         var o =  document.createElement("img");
         o.src='https://domain.com/click.php?event4=0';
     }
    else
     {
         var o  = document.createElement("img");
         o.src='https://domain.com/click.php?event4=1';
     }
</script>

Checks for screen orientation? If so, why would be useful?

<script>
function pushToTrackerViaImage(){
     var pushURL = 'https://domain.com/click.php?event6=1';
     var img = document.createElement('img');
     img.src=pushURL;
     img.style.display='none';
    document.body.appendChild(  img );
}
function pushAfterTimeout(timeout){
     setTimeout(pushToTrackerViaImage, timeout*1000);
}
var TIMEOUT_IN_SECONDS = 20;
pushAfterTimeout(TIMEOUT_IN_SECONDS);
</script>

Checks how many times the site countdown