const openArt = function openArticles() {
var artId = this.id;
var theURL = 'artshow.jsp?artid=' + artId;
var winName = 'Artshow';
var features = 'resizable=yes,width=460,height=750,scrollbars=yes';

window.open(theURL, null, features);
};

window.onload = function () {
  var artLinks = document.getElementsByClassName("artLink");
  Array.from(artLinks).forEach(function (element) {
      element.addEventListener('click', openArt);
  });
}