gabi

Hiya All: I am trying to make a PHP + MySQL timesheet system for a website. I am new with both programs so please bare with me. What I would like is the users to input their hours into the week, consisting of monday to sunday. From those hours i need to check for validation - is it best to use javascript or php for example end time cannot be less than start time. I also want the total hours per day to be displayed automatically, therefore meaning that they are updated straight away WITHOUT the page being refreshed, I have no idea how to achieve this and I have tried everywhere sadly. Everything else that I might need is on this website so that is brilliant Is anyone able to help me with this ?