I'm fairl sure this can be done but I haven't read enough to figure it out for sure. I guess if it can't be done, I'll save the time working on it and go about it a different direction. I've got a site and I need a user to log in. The 'login' button makes a DIV visible (through DHTML) with inputs for username and password. On submit I want to run a PHP program in that DIV only that will check the login against database info and either reload the entire page if successful or show the login DIV again if failed. So, can a click/submit load a program into a div (which I guess is the idea behind AJAX isn't it?) that will run through and perform the desired tasks? I'm not looking for code, just a yes/no an dmaybe some resources if you have them handy.