Find all the workshop IDs real quick.

getWorkshopIdsOnPage.js

function getWorkshopIdsOnPage(){
  var _workshop_ids="";
  document.querySelectorAll('.collectionItemDetails a[href*="filedetails"').forEach(
    function(cv, i, arr){
      var url = cv.attributes.getNamedItem('href').value;
      _workshop_ids += url.split('=')[1] + "\n";
    }
  );
  console.log(_workshop_ids);  
}