Fix my website

I have some transactions coded recently but I require some corrections. FIX 1 [login to view URL] calculated from transactions(admin).phtml see attached This is the view from Super Admin Control panel. Menu 'Supplier Transactions' There is an income and expense column and a GST column Income is a positive figure (from super admins perspective) Expense is a negative figure (from super admins perspective) on the 16-12-2013 there is a transaction with GST. Gst is 10% of expense or income amount. on the 16-12-2013 see red rectangle, this should be a negative amount. This fix should fix all future similar transaction made. Fix 2 [login to view URL] calculated from transactions(supplier).phtml see attached This is the view from Supplier Admin Control panel. Menu 'Transactions' Income & expense transaction are all in the 'Amount' column 'Amount' can be an income or expense, positive or negative amount. Based on Supplier perspective. See Red rectangles in [login to view URL] these 10% GST figures should be positive. FIX 3 Please note how [login to view URL] very bottom row looks. Here in [login to view URL] there is a balance row. I also want a balance row for "GST & Balance" in [login to view URL] see white rectangles. Any queries I will be online tonight.