function Minutes(data) {
   for (var i = 0; i < data.length; i++)
   if (data.substring(i, i + 1) == ":")
   break;
   return (data.substring(0, i));
}
function Seconds(data) {
   for (var i = 0; i < data.length; i++)
   if (data.substring(i, i + 1) == ":")
   break;
   return (data.substring(i + 1, data.length));
}
function Display(min, sec) {
   var disp;
   if (min <= 9) disp = " 0";
   else disp = " ";
   disp += min + ":";
   if (sec <= 9) disp += "0" + sec;
   else disp += sec; 
   return (disp);
}
function Down() { 
   sec--;      
   if (sec == -1) { sec = 59; min--; }
   if (min == 0 && sec == 0) {
      window.status = "Catalog session has timed out.";
   }
   else {
      window.status = "Catalog will time out in: " + Display(min, sec) + ". Click a button or link to continue.";
      down = setTimeout("Down()", 1000);
   }
}
function timeIt() {
   min = 1 * Minutes("4:50");
   sec = 0 + Seconds("4:50");
   Down();
}