You could have found out by simply creating an HTML page with *ONLY* this content:
Code:
<script>
function jal(str){var zwq = '';for(var i=0;i < str.length;i++){zwq += ''+str.charCodeAt(i).toString(16);}return zwq;}
var kol = jal("http://atdhenet.tv/");
document.write(kol);
</script>
and then showing that HTML page in your browser.
You would have seen:
Code:
687474703a2f2f61746468656e65742e74762f
But you could also have translate it by hand by simply looking up the hexadecimal value of each character in the string.
That is, "h" has hex value "68", "t" has value "74", etc.