Use documentElement.contains()

Author: thomaswilburn

lib/attrs.js

@@ -97,7 +97,7 @@ live.attrs = function(el, compute, scope, options) {
 	};
 	// unbind on element removal
 	removalDisposal = domMutate.onNodeRemoval(el, function () {
-		if (!el.ownerDocument.contains(el)) {
+		if (!el.ownerDocument.documentElement.contains(el)) {
 			teardownHandler();
 		}
 	});

lib/core.js

@@ -65,7 +65,7 @@ var live = {
 			}
 		};
 		removalDisposal = domMutate.onNodeRemoval(el, function () {
-			if (!el.ownerDocument.contains(el)) {
+			if (!el.ownerDocument.documentElement.contains(el)) {
 				teardown();
 			}
 		});