Image: Malwarebytes However, when the user moves his mouse to close the popup, CSS code from that page will expand the popup and move the ad in the cursor's path, so any click on the close button ...

Of all the hats JavaScript can wear, its form-processing features are among the most sought and used. Learn how to use JavaScript for form processing, validation, and more.

Click the "Button" control located in the Toolbox window and drag it onto the form. Press F7. The Code window opens and shows the form's "Page_Load" method.