How to hack a webpage and edit it, it is to easy by use of javascript.It is a funny trick done only on your browser.
Open any site which you want to hack, after complete loading go to address bar and type or copy paste this javascript code...
javascript:document.body.contentEditable='true';document.designMode='on';void 0
and then click Enter Key, You see that web page refresh and then by use of mouse go to page and edit page ENJOY!!!!!