www.yourhtmlsource.com/forms/basicforms.html

A basic tutorial on making HTML forms

en.wikipedia.org/wiki/Framekiller

A framekiller (or framebuster or framebreaker) is a technique used by web applications to prevent their web pages from being displayed within a frame. A frame is a subdivision of a Web browser window and can act like a smaller window. It's usually depl ...

en.wikipedia.org/wiki/Clickjacking

Clickjacking (User Interface redress attack, UI redress attack, UI redressing) is a malicious technique of tricking a Web user into clicking on something different from what the user perceives they are clicking on, thus potentially revealing confidenti ...