<p>I'm looking for someone to explain how to drag and drop in javascript, I want a horizontal line with some customizable images in it.</p>

<p>I've had a look at the online tutorials for these but find them very hard to use.</p>

I would recommend that you look into one of the Javascript Frameworks out there. We use
prototype
with scriptaculous.
You can look at a demo for Drag and Drop in Scriptaculous
here
. And you can run through a tutorial
here
.
Or look into any of the other frameworks such as JQuery or Dojo.