macro program

We need a simple macro program that can refresh a webpage and select a button when it becomes available. We utilize a website that once or twice daily offers a project, however you must select the accept button to receive the job. This requires us to sit at the computer and continually refresh the browser waiting for the orders. We want to automate this process so that 24/7 this software will run until the offer appears and automatically accept the job offer on its own.