download using jquery

download using jquery

I have this jquery

  2.    $(document).ready(function(){
  3.       $("a.downloadHelp").live('click', function(e){
  4.    e.preventDefault();  
  5.    window.location.href = '/artms/downloads/db-model.pdf';
  6.       });
  7.    });

    8. and here the link
    <a style="padding-left:5px;padding-right:5px;" class="downloadHelp" href="#">Help</a>

    when user click  on help link  the file is opens in the browser , is there  way to open the link using browser download   window ?