//twitter function time
//from twitters blogger badge
//http://twitter.com/javascripts/blogger.js
function relative_time(time_value) {
   var parsed_date = Date.parse(time_value);

   var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
   var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);

   if(delta < 60) {
       return 'less than a minute ago';
   } else if(delta < 120) {
       return 'about a minute ago';
   } else if(delta < (45*60)) {
       return (parseInt(delta / 60)).toString() + ' minutes ago';
   } else if(delta < (90*60)) {
           return 'about an hour ago';
       } else if(delta < (24*60*60)) {
       return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
   } else if(delta < (48*60*60)) {
       return '1 day ago';
   } else {
       return (parseInt(delta / 86400)).toString() + ' days ago';
   }
}