Is there an easy way to have images changed based on the person's computer clock? for example, I want to display an image during the morning, another during the evening, and then another at night. I'm not exactly sure what I need to use, but would love to just do plain HTML. THANKS!

when you want user interaction, especially something like this, nothing is going to just happen with html. you would have to use some sort of object oriented programming langauage such as javascript or php, or something along that effect.

Here's some JavaScript that will do it. Just add your image tag into the document.write

	<SCRIPT LANGUAGE=JAVASCRIPT TYPE="TEXT/JAVASCRIPT">
	<!-- Hide script from old browsers

	now = new Date

	if (now.getHours() < 5) {
		document.write("What are you doing up so late?")
	}
	else if (now.getHours() < 9) {
		document.write("Good Morning!")
	}
	else if (now.getHours() < 17) {
		document.write("No surfing during working hours!")
	}
	else {
		document.write("Good Evening!")
	}

	// End hiding script from old browsers -->
	</SCRIPT>

Code is from: http://www.chalcedony.com/javascript3e/

Ok, so the code that monorail_driver want will be

<SCRIPT LANGUAGE=JAVASCRIPT TYPE="TEXT/JAVASCRIPT">
	<!-- Hide script from old browsers

	now = new Date

	if (now.getHours() < 12) {
		document.write("<img src='img1.jpg'>")
	}
	else if (now.getHours() < 16) {
		document.write("<img src='img2.jpg'>")
	}
	else if (now.getHours() < 24) {
		document.write("<img src='img3.jpg'>")
	}
	else {
		document.write("<img src='img4.jpg'>")
	}

	// End hiding script from old browsers -->
	</SCRIPT>