Optimizing DOM for Better Ajax Functions

One of the biggest challenges for JavaScript and Ajax based developers is on using DOM for various browsers. This is not only based on browser incompatibility but also on the ability of the application to load faster in the client side. If the application will not load as expected, users might stay away from the application which lowers the feasibility or usefulness of the application. Loading problem for developers often stem from the fact that the entire webpage has to load first before JavaScript function is executed. Developers execute window.onload=function () so that the function will check if the webpage is fully loaded first. Although this function is very feasible