If you are hoping to put some sort of movie (or TV or play or whatever) script online, then this is a tool you would do well to use to format it. The layout used for writing movie scripts etc. is a pretty rigidly (and somewhat arbitrarily) defined convention. You fail to obey them at your own risk. It's pretty easy to format them as a stylesheet, however:

body {
font-family: "Courier New", "Courier", monospace;
font-size: 12pt;
}

p {
margin: 12pt 0px 12pt 1.5in;
width: 6.5in;
}

p.dialogue {
margin: 0px 0px 0px 3in;
width: 3in;
}

p.name {
margin: 12pt 0px 0px 4.2in;
width: 1.8in;
}

p.action {
margin: 0px 0px 0px 3.7in;
width: 1.5in;
}

That should all be pretty much self-explanatory, but click here to see the Script Stylesheet in action and have it all explained.