agent.js in poltergeist-1.9.0

- old
+ new

@@ -379,12 +379,19 @@
   Node.prototype.tagName = function() {
     return this.element.tagName;
   };
 
   Node.prototype.isVisible = function(element) {
-    var style;
+    var map_name, style;
     if (element == null) {
       element = this.element;
+    }
+    if (element.tagName === 'AREA') {
+      map_name = document.evaluate('./ancestor::map/@name', element, null, XPathResult.STRING_TYPE, null).stringValue;
+      element = document.querySelector("img[usemap='#" + map_name + "']");
+      if (element == null) {
+        return false;
+      }
     }
     while (element) {
       style = window.getComputedStyle(element);
       if (style.display === 'none' || style.visibility === 'hidden' || parseFloat(style.opacity) === 0) {
         return false;