title: Find size of file behind download link with jQuery
body: <p>I was wondering if there was a way to use jQuery to find out the file size for a PDF that i'm linking to a webpage. </p>
  
  <p>I want to make it so that on hovering over the download link, a modal box pops up saying the file size of the PDF. I can do the second bit, the only thing i'd like to know is how to find out the file size. I dont know if jQuery is capable of this. If not then too bad i guess..</p>
  
  <p>Cheers in advance.</p>