Small Joomla Jomres 8 javascript mod needed to tariff template

Hi the solution provider must be fully conversant with Jomres version 8, javascript and PHP. The job should then be just a small piece of work, no more than an hour I would expect. We are using Jomres 8.2.1 in a Joomla 3.4 site we sell 3,4 & 7 night breaks only, not nights. These will have different bands depending on the time of year. We are using micromanage for tariffs. You will know that by default you can display a nightly rate or a weekly rate or a monthly rate in the tariff tab page by changing: Price summary and estimates should be priced as per night/per week/per month? in the booking configuration setup. We need a mod to the Tariff tab which calculates the total break price as nightly rate x minimum days. So this one option would allow for the displaying of a total price for any period of time. If it helps I started a thread on Jomres and worked out what some of the variables are, however my javascript is poor and I didn't proceed further. [login to view URL] Any mods must be made via the Template Editor, [login to view URL] so that they are not overwritten by upgrades. Idealy I think I want: a small piece of javascript that calculates a variable called {BREAKRATE} i.e. nightly rate x minimum days a modified [login to view URL] that displays {BREAKRATE} with the words "per break" where the minimum days are not equal to 7 and "per week" when they are. Any more robust suggested solutions welcome.