Keeping elements consistent across pages in a simple and elegant manner?

[Corrupted Unicorn]

So I've been copying and pasting my navigation bar across all pages like an animal  But I bet there's a better way to keep things like links, images and text consistent across different pages. I remember I used an i-frame for my unicorn shrine's subpage buttons: but again, I'm PRETTY SURE there's an even BETTER way to do that kind of thing... only I don't remember and since I'm bad at talking searchenginese, my searchers don't bring any good results 

Plus, I just prefer the friendlier, more casual and less technical aura around here  I've never understood Stackexchange folks 

But enough about that, I hope you get what I mean  And thanks in advance 

[larvapuppy]

Hey, personally I use iframes, but I went looking because I remembered an old thread where people talked about the javascript method of doing this. https://forum.melonland.net/index.php?topic=2139

I'm sure there are other methods too, though.

[Memory]

Yeah I use I-frames too They are easier to use than a nav bar, but something else you can do is hide the nav bar and make it a drop-down menu, kind of like whats on the NC lottery website. you can change whether you want to have all the wining numbers open on your screen see