"The problem in defense is how far you can go without destroying from within what you are trying to defend from without." -- President Dwight Eisenhower
HTS costs up to $300 a month to operate. We need your help!
http://www.w3schools.com/JS/default.asp, and in particular http://www.w3schools.com/JS/js_examples_3.asp
To understand how HTML exploitations work, you must understand what is an exploitation. An exploitation is the finding and using of a flaw in the code, like HTML, PHP etc. HTML is the backbone of hacking.