Alright well I'm in somewhat of a pickle because I don't have the resources at the moment to complete the images due to the fact that I live in the US but will be in Switzerland for the next couple months. I do understand what you mean though so i will try to give you my best example of what my idea of the script is at this moment.
The idea is that when you get to the page it is blank with just a button that says "Switch It Up" on it (button should be centered). When you click this button a random image will come up for example a picture of Toronto, above the picture it will say "Toronto" and below it, it'll say "Toronto is located in Canada and is the largest city in Canada." Also I was hoping to keep the button from the start with the same randomize function but with "Switch It Up Again" on it. Now I was planning to do this with a bunch of cities. (everything centered in the middle of the page)(image size 300px by 300px)
So that's the best i can do right now I mean the plans on doing it with a large amount of cities. So my thought was to spare all the work and learn from a simple short script so that I could just add onto it, with images/titles/descriptions
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As for the wasting each others time I couldn't agree more so if its still not enough information we'll have to talk in a few months.