diff --git a/src/recaptcha-wrapper.js b/src/recaptcha-wrapper.js
index 5bedb2f..eeab57d 100644
--- a/src/recaptcha-wrapper.js
+++ b/src/recaptcha-wrapper.js
@@ -11,5 +11,5 @@ const globalName = "grecaptcha";
 export default makeAsyncScriptLoader(ReCAPTCHA, URL, {
   callbackName: callbackName,
   globalName: globalName,
-  exposeFuncs: ["getValue", "reset"],
+  exposeFuncs: ["getValue", "reset", "execute"],
 });
diff --git a/src/recaptcha.js b/src/recaptcha.js
index 400e978..ac71b7d 100644
--- a/src/recaptcha.js
+++ b/src/recaptcha.js
@@ -10,7 +10,7 @@ const ReCAPTCHA = React.createClass({
     type: PropTypes.oneOf(["image", "audio"]),
     tabindex: PropTypes.number,
     onExpired: PropTypes.func,
-    size: PropTypes.oneOf(["compact", "normal"]),
+    size: PropTypes.oneOf(["compact", "normal", "invisible"]),
     stoken: PropTypes.string,
   },
 
@@ -34,6 +34,15 @@ const ReCAPTCHA = React.createClass({
     return null;
   },
 
+  execute() {
+    const { grecaptcha } = this.props;
+    const { widgetId } = this.state;
+
+    if (grecaptcha && widgetId !== undefined) {
+      return grecaptcha.execute(widgetId);
+    }
+  },
+
   reset() {
     if (this.props.grecaptcha && this.state.widgetId !== undefined) {
       this.props.grecaptcha.reset(this.state.widgetId);
diff --git a/test/recaptcha-spec.js b/test/recaptcha-spec.js
index 707b9c9..a38109c 100644
--- a/test/recaptcha-spec.js
+++ b/test/recaptcha-spec.js
@@ -4,55 +4,71 @@ import ReactTestUtils from "react-addons-test-utils";
 import ReCAPTCHA from "../src/recaptcha";
 
 describe("ReCAPTCHA", () => {
-  it("Rendered Component should be a div", () => {
-    let instance = ReactTestUtils.renderIntoDocument(
-      <ReCAPTCHA sitekey="xxx" />
-    );
-    assert.equal(ReactDOM.findDOMNode(instance).nodeName, "DIV");
-  });
-  it("Rendered Component should contained passed props", () => {
-    let props = {
-      className: "TheClassName",
-      id: "superdefinedId",
-    };
-    let instance = ReactTestUtils.renderIntoDocument(
-      <ReCAPTCHA sitekey="xxx" {...props} />
-    );
-    assert.equal(ReactDOM.findDOMNode(instance).id, props.id);
-    assert.match(ReactDOM.findDOMNode(instance).className, new RegExp(props.className));
-  });
+	it("Rendered Component should be a div", () => {
+		let instance = ReactTestUtils.renderIntoDocument(
+			<ReCAPTCHA sitekey="xxx" />
+		);
+		assert.equal(ReactDOM.findDOMNode(instance).nodeName, "DIV");
+	});
+	it("Rendered Component should contained passed props", () => {
+		let props = {
+			className: "TheClassName",
+			id: "superdefinedId",
+		};
+		let instance = ReactTestUtils.renderIntoDocument(
+			<ReCAPTCHA sitekey="xxx" {...props} />
+		);
+		assert.equal(ReactDOM.findDOMNode(instance).id, props.id);
+		assert.match(ReactDOM.findDOMNode(instance).className, new RegExp(props.className));
+	});
 
-  it("should call grecaptcha.render, when it is already loaded", (done) => {
-    let grecaptchaMock = {
-      render(node, options) {
-        assert.isNotNull(node);
-        assert.equal(options.sitekey, "xxx");
-        done();
-      },
-    };
-    let instance = ReactTestUtils.renderIntoDocument(
-      <ReCAPTCHA sitekey="xxx" grecaptcha={grecaptchaMock} />
-    );
-    assert.ok(instance);
-  });
-  it("reset, should call grecaptcha.reset with the widget id", (done) => {
-    let grecaptchaMock = {
-      render() {
-        return "someWidgetId";
-      },
+	it("should call grecaptcha.render, when it is already loaded", (done) => {
+		let grecaptchaMock = {
+			render(node, options) {
+				assert.isNotNull(node);
+				assert.equal(options.sitekey, "xxx");
+				done();
+			},
+		};
+		let instance = ReactTestUtils.renderIntoDocument(
+			<ReCAPTCHA sitekey="xxx" grecaptcha={grecaptchaMock} />
+		);
+		assert.ok(instance);
+	});
+	it("reset, should call grecaptcha.reset with the widget id", (done) => {
+		let grecaptchaMock = {
+			render() {
+				return "someWidgetId";
+			},
 
-      reset(widgetId) {
-        assert.isNotNull(widgetId);
-        done();
-      },
-    };
-    let instance = ReactTestUtils.renderIntoDocument(
-      <ReCAPTCHA sitekey="xxx" grecaptcha={grecaptchaMock} />
-    );
-    instance.reset();
-  });
-  describe("Expired", () => {
-    it("should call onChange with null when response is expired");
-    it("should call onExpired when response is expired");
-  });
+			reset(widgetId) {
+				assert.isNotNull(widgetId);
+				done();
+			},
+		};
+		let instance = ReactTestUtils.renderIntoDocument(
+			<ReCAPTCHA sitekey="xxx" grecaptcha={grecaptchaMock} />
+		);
+		instance.reset();
+	});
+	it("execute, should call grecaptcha.execute with the widget id", (done) => {
+		let grecaptchaMock = {
+			render() {
+				return "someWidgetId";
+			},
+
+			execute(widgetId) {
+				assert.isNotNull(widgetId);
+				done();
+			},
+		};
+		let instance = ReactTestUtils.renderIntoDocument(
+			<ReCAPTCHA sitekey="xxx" size="invisible" grecaptcha={grecaptchaMock} />
+		);
+		instance.execute();
+	});
+	describe("Expired", () => {
+		it("should call onChange with null when response is expired");
+		it("should call onExpired when response is expired");
+	});
 });