+
+ var old = child[0].style.height;
+
+ // Test NaN
+ child.css("height", parseFloat("zoo"));
+ equals( child[0].style.height, old, "Make sure height isn't changed on NaN." );
+
+ // Test null
+ child.css("height", null);
+ equals( child[0].style.height, old, "Make sure height isn't changed on null." );
+
+ old = child[0].style.fontSize;
+
+ // Test NaN
+ child.css("font-size", parseFloat("zoo"));
+ equals( child[0].style.fontSize, old, "Make sure font-size isn't changed on NaN." );
+
+ // Test null
+ child.css("font-size", null);
+ equals( child[0].style.fontSize, old, "Make sure font-size isn't changed on null." );