pid: <input type=text id=pid><br/>
<input type=button name=go value="Generate shiny TID/SID" onclick="alert('a');pid=document.getElementById('pid').value;alert('a');secret=Math.floor(Math.random()*65536);alert('a');document.getElementById('tid').value=secret;alert('a');document.getElementById('sid').value=(secret^(pid/65536)^(pid%65536));alert('a');"><br/>
tid: <input type=text id=tid><br/>
sid: <input type=text id=sid><br/>