Can we change the “Search”–button properties in the MyOrders main-page ?

• Like a filtering (search only if price > 200 euros) or hide the “Search” -button of main-page view ?

… or can we make javascript in the peripherals “shared processes” in the script-js for onSubmit-methods…something like : “if system.order.cost < 200 ..alert “do not order…” return false” ?