An on-demand database system that manages graphical representation in web pages may associate a first graphical representation in a first web page with a first event in a library of events. Each of the events in the library of events may be associated with a function. A second graphical representation in the first web page may also be associated with the first event. Based on detecting a triggering of the first event, the database system may cause a function associated with the first event to execute. The first graphical representation and the second graphical representation may be based on execution of the function associated with the first event.