What purpose do the variables passed along in a link provide? For instance, I have a homepage of INDEX.PHP (no php scripting as far as I can tell within this page). But when you click a link to Login, it links to the same page but with an app variable at the end (i.e.index.htm?app=9995). This used to load a Login table within the same page, but has stopped working for some reason. I am coming in behind someone that passed away over the Christmas Holidays, he developed the site.