When I visit programming talk I find out a hot topic talking about Levyo Ajax Technology Gallery. Their site is at http://levyo.com - demo at http://gettingzone.com. They build Ajax application on PHP, Mysql. Their gallery runs so fast, especially when I login, register, submit, rate, write comment, upload, process, Tab feature... .

How can they do especially "unlimited tab feature", you can add new category in Admin CP, it generates new Tab automatically? How can we programm an Ajax Application on PHP?