Job Description Hi We have an GUI to an application that uses a custom webserver as the backend and EXTJS 3 on the front end. We would like to move to EXTJS 4 and as such would like someone to rewrite the front end interface its about 25 pages (some are very simple ie 1 text box) other are more complex. We are also interested in learning if we can use EXTJS designer with the new EXTJS4 build Keywords: Web Programming, javascript, ajax, extj