function rotate_quote($interval,$toq){//$interval is the amount of SECONDS you would like the quotes to rotate or whatever it maybe. $toq is the total amount of things to rotate.











      //Mathematics on the time, its returned as whole number so we can do some math on it.


        $time=time();


          $chk=$time/$interval;


          $chk=explode('.',$chk);


          $ch=$chk['0'];//Whole number version of time/insterval.








   //Get amount of digits to play with.


          $chc=strlen($ch);//Number of digits after time has been divided.


          $toc=strlen($toq);//Number of digits to use.


          $chk=$chc-$toc;//number of digits to subtract.





          //Limit the length of the string to only whats needed.


          $toch=substr($ch,$chk);





          //Leaving it zero helps no one.


          if ($toch=='0'){


                  $toch='1';


                  }





          $toch=$toch*$toch;//Allows for a more Random appeal without it actually being random





           //Lets return a number within the limits preset


          while($toch>$toq){


                 $toch=$toch-$toq;


                }





                 return $toch;





                }

function rq_rotate_now(){


    global $prefix, $db;


   


   mt_srand((double)microtime() * 1000000); // Seed the generator


    


   list($total) = $db->sql_fetchrow($db->sql_query("SELECT count(*) FROM ".$prefix."_rq")); 


   $num = rand(0,($total-1));


    


   list($qid) = $db->sql_fetchrow($db->sql_query("SELECT qid FROM ".$prefix."_rq LIMIT $num,1"));


    $qid = intval($qid);





   $time=time();  // No need to be fancy.  Just use Unix time stamp.


   


    $db->sql_query("update ".$prefix."_rq_cfg set qid='$qid', last_rotated=$time where cid=1");


    Header("Location: admin.php?op=rq_administration");


}

$link = mysql_connect($dbhost,$username,$password) or die( "Unable to link to db server");


$selected = mysql_select_db($database) or die("Could not select database"); 





function show_form($pqnum){


  $query  = "SELECT qnum, reactant, pos, pos_sub, neg, neg_sub FROM chem_formulas1 WHERE qnum=$pqnum";


  $qresult = mysql_query($query) or die("Invalid query: $query") ;


  $row = mysql_fetch_array($qresult) or die("You are done... no more questions"); //just for testing