<script type="text/javascript">
        var currentTallest = 0,
         currentRowStart = 0,
         rowDivs = new Array(),
         $el,
         topPosition = 0;

        jQuery('.edd_download').each(function() {

           $el = $(this);
           topPostion = $el.position().top;

           if (currentRowStart != topPostion) {

             // we just came to a new row.  Set all the heights on the completed row
             for (currentDiv = 0 ; currentDiv < rowDivs.length ; currentDiv++) {
               rowDivs[currentDiv].height(currentTallest);
             }

             // set the variables for the new row
             rowDivs.length = 0; // empty the array
             currentRowStart = topPostion;
             currentTallest = $el.height();
             rowDivs.push($el);

           } else {

             // another div on the current row.  Add it to the list and check if it's taller
             rowDivs.push($el);
             currentTallest = (currentTallest < $el.height()) ? ($el.height()) : (currentTallest);

          }

          // do the last row
           for (currentDiv = 0 ; currentDiv < rowDivs.length ; currentDiv++) {
             rowDivs[currentDiv].height(currentTallest);
           }

         });​
    </script>