Very simple / quick locally hosted web prototype

I want to test out an idea about comparing photos. To do this I want to first test out the mechanic. Eventually it would be a phone app, but to begin with I just want to create a little local website that creates a database of images, then serves up 2 random images at a time, and the user selects which one they prefer. As a result of the choice, some information is updated against that image in a database. Simple. As I say at the moment I'm not after something beautiful - only I'll see it. I'm after the following: 1) Simple website that will work on my mac laptop, running off a local MAMP server, and phones connecting to the laptop over wifi 2) Code clear enough that I can tinker with some of the mechanics (ie, the data being updated when a photo is selected) 3) HTML simple/clear enough that I can change the styling there's an example prototype available here: [login to view URL] - click on 'notes' on the side to check for any more notes.