hei guys i got some question
currenlty i am developing a sites. i am trying to develope a site that everytime a user visit my sites the picture will be showing in the site will be different.
In addition, i also want that when the user stay in mysite for a while i want my web sites the page refresh itself and load another picture.
in additon how can i make a site which will only load a portion of a page for example i wont that every page in my sites the header and footer always stay the same only change the content in the middle when a user click a link. how do i do that.