JQuery default functions

Following is the jquery default function that is run. we can use this to get the ajaxrequests
function pageLoad() {
            if (!Sys.WebForms.PageRequestManager.getInstance().get_isInAsyncPostBack()) {
                Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(AjaxBegin);      
                Sys.WebForms.PageRequestManager.getInstance().add_endRequest(AjaxEnd);      

            }
        }