javascript script type text defining

Question

i saw in a website defining script type tag like this , please can anybody tel me what is that " type="text/javascript+fk-window-onload-executed ">, what is this " +fk-window-onload-executed " mean?? and why they are using such type..

when i execute below code, code is not executing but when i remove +fk-window-onload-executed then its working fine

  <script type="text/javascript+fk-window-onload-executed"">
(function () {
try {
    var Lastclick = true;
    var viz = document.createElement('script');
    viz.type = 'text/javascript';
    viz.async = true;
    viz.src = ("https:" == document.location.protocol ?"https://" :   "http://localhost")+ "/projects2/857/VIZVRM857.src.js";
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(viz, s);
    viz.onload = function () {
        try {
            pixel.parse(Lastclick)
        } catch (i) {}
    };
    viz.onreadystatechange = function () {
        if (viz.readyState == 'complete' || viz.readyState == 'loaded') {
            try {
                pixel.parse(Lastclick)
            } catch (i) {}
        }
    }
 } catch (i) {}
   })();</script>

please anybody tell me, why they are using such type definition and what is the benefit of using such type.

Thanks in advance.. Please help

Answer 1

From looking at the source you provided this is a custom document type flip kart is using (fk == Flip Kart). My guess would be they are using it to prevent reloading the script on certain occasions.