Reverse Engineer some Javascript

Hello, I am coding a scrapper and need to decipher the url to fetch the data from. The urls change every 30 seconds and I need the help of a skilled javascript programmer to figure out what the url to scrap from is. I do not need the scrapper, I just need to reverse engineer the javascript so I can get the url to fetch the data from. This is best shown by example: Start by opening Google Chrome with developer mode (F12), then goto url: [login to view URL] Under the network tab, you should see hundreds of requests of images and scripts being loaded. The one I am interested in looks like: [login to view URL] What I need you to do, is figure out where the values for f=#########_####### (9 digits followed by underscore and 7 digits) and s=XXXXXXX come from and be able to reproduce it for my script. The above url changes every 30 seconds and has a very short life, if you're successful, requesting the url will load a data dump. If you were not successful, you will get an empty file. From Chrome developer, you can open the [login to view URL] file and it will continue to load for about 30 seconds, afterwhich the url will change to a new value. What I need is for you to tell me how to find the values for 'f' and 's' at any given time, I will then write a perl script using curl to fetch the data. You just need to tell me where curl can fetch the values for 'f' and 's', you do not need to write the scrapper. Note: Your solution must tell me where the values for 'f' and 's' are stored as I will fetch them using curl, I will not be using the browser to fetch them. Thank you Charles