async ajax post , process in batches

Looking for expert jquery / javascript coder to fine tune the existing code of our [login to view URL] file Major fine tuning of the code needs to be done with respective of 1- All the ajax post calls are in asynchronous mode , so we need the batch processing Implemented with error handling [note :ajax calls are made in loop] Mainly for functions : auditreads auditproc 2- currently a pop up is displayed [displayOverlay function ]showing the processing state messages , add a time calculating function to show the total time take for all processing. After processing the popup needs to be removed and should show an alert message Note: data fetch and post of ajax calls are made on internal website url [ this URL cannot be opened from out side network ] So, testing of the data can only be done in a web conference Requirement is Urgent