$(document).ready(function () {

 //selecting Id
 $(".ec_product_id.select_popup").on("click", function () {
  void window.open('select.php?class_name=ec_product', '_blank',
          'width=1000,height=800,TOOLBAR=no,MENUBAR=no,SCROLLBARS=yes,RESIZABLE=yes,LOCATION=no,DIRECTORIES=no,STATUS=no');
 });


});