X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-utils.js;h=f53c81ea16360486f42429546bfb90955b91b0eb;hb=db775859ec7ae823b731bfb04cb544ef3ae7ad3a;hp=6aa7dfcafd9e8a28bcdd393def0bf7d5688778f2;hpb=5ad7495d3176ab8f7e79304be352ffe1e24bfb35;p=dygraphs.git

diff --git a/dygraph-utils.js b/dygraph-utils.js
index 6aa7dfc..f53c81e 100644
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -301,7 +301,11 @@ Dygraph.findPosX = function(obj) {
   if(obj.offsetParent) {
     var copyObj = obj;
     while(1) {
-      var borderLeft = window.getComputedStyle(copyObj, null).borderLeft || "0";
+      // NOTE: the if statement here is for IE8.
+      var borderLeft = "0";
+      if (window.getComputedStyle) {
+        borderLeft = window.getComputedStyle(copyObj, null).borderLeft || "0";
+      }
       curleft += parseInt(borderLeft, 10) ;
       curleft += copyObj.offsetLeft;
       if(!copyObj.offsetParent) {
@@ -334,7 +338,11 @@ Dygraph.findPosY = function(obj) {
   if(obj.offsetParent) {
     var copyObj = obj;
     while(1) {
-      var borderTop = window.getComputedStyle(copyObj, null).borderTop || "0";
+      // NOTE: the if statement here is for IE8.
+      var borderTop = "0";
+      if (window.getComputedStyle) {
+        borderTop = window.getComputedStyle(copyObj, null).borderTop || "0";
+      }
       curtop += parseInt(borderTop, 10) ;
       curtop += copyObj.offsetTop;
       if(!copyObj.offsetParent) {
@@ -1238,10 +1246,11 @@ Dygraph.isElementContainedBy = function(containee, container) {
   if (container === null || containee === null) {
     return false;
   }
-  while (containee && containee !== container) {
-    containee = containee.parentNode;
+  var containeeNode = /** @type {Node} */ (containee);
+  while (containeeNode && containeeNode !== container) {
+    containeeNode = containeeNode.parentNode;
   }
-  return (containee === container);
+  return (containeeNode === container);
 };