how to make a code that we can choose whether to view a simple page or advanced page like in overlay?? its mean a profile with two layouts that the viewer can choose which layout to use...any code for

You can use this trick http://theftalk.com/t30135-Theme-C.S.S.-Switcher..html Or this http://theftalk.com/t6797-Theme-Switcher.html Its called theme switcher