[wrumble]

Hi there, i am trying to create an app for my restaurant/bar using a free website service(not sure if im allowed to name it, will do if asked) and it has a html script page where i can enter and edit my own html. I want to use this to create a random image generator or there abouts so that people can push a button or spin a wheel once a day to see if they can win some drinks and food deals. Currently im thinking of just simply using a button that selects an image at random then displays it (saying the deal they might have won), i have found some code that can randomly choose the image but i cant find any code that will make it work only once in an evening between certain times from the push of a button. I am open to any suggestions or possible improvements that would make it more interactive. Thanks for your time in advance.