Check to ensure dom node exists when calculating size. Fixes #919

diff --git a/src/Chart.Core.js b/src/Chart.Core.js
index 3a21f0abd0c7f6455a2525e5f1220307781cfd02..143244a3d9d636a0812db5e44f77b9949c112a8a 100755 (executable)
--- a/src/Chart.Core.js
+++ b/src/Chart.Core.js
@@ -839,13 +839,13 @@
                        var container = domNode.parentNode,
                            padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right'));
                        // TODO = check cross browser stuff with this.
-                       return container.clientWidth - padding;
+                       return container ? container.clientWidth - padding : 0;
                },
                getMaximumHeight = helpers.getMaximumHeight = function(domNode){
                        var container = domNode.parentNode,
                            padding = parseInt(getStyle(container, 'padding-bottom')) + parseInt(getStyle(container, 'padding-top'));
                        // TODO = check cross browser stuff with this.
-                       return container.clientHeight - padding;
+                       return container ? container.clientHeight - padding : 0;
                },
                getStyle = helpers.getStyle = function (el, property) {
                        return el.currentStyle ?