Mostly we navigate on different using <a></a> tag you can navigate on different pages
Using Java script window.open function which you a lot of option with navigation..
Opens a new window and loads a document specified by a given URL. Also,
opens a new window that uses the sUrl parameter and the sName parameter
to collect the output of the write method and the writeln method.
Syntax
oNewDoc = document.open(sUrl [, sName] [, sFeatures] [, bReplace])