A quick script for totaling up how much time it'd take to watch through a coursera class's lectures straight through.

coursera_lecture_time.js

var lectureLinks = $('#page-content .item_list a.lecture-link')
var timecodes = $.map(lectureLinks, function(link){ 
  return link.text.split(" ").reverse()[0].replace(/[()]/g,'')
})
var times = $.map(timecodes, function(time){ 
  var timesplit = time.split(':')
  var min = timesplit[0], sec = timesplit[1]
  return min*60+sec*1
})
var total = 0; for (var time in times) { total += times[time] }
'Total Time: ' + Math.floor(total/(60*60)) + ":" + Math.floor(total / 60) % 60 + ":" + total % 60