// ==UserScript==
// @name            Center
// @namespace       http://guillem.cantallops.net
// @description     I don't like left-aligned webs, so I center them in MY browser :-P
// @include         http://*.hp.com/*
// @include         http://*.ibm.com/*
// @include         http://*.dell.com/*
// @include         http://*.intel.com/*
// @include         http://*.pcbox.com/*
// @include         http://*.bitel.es/*
// ==/UserScript==

var head, style;
head = document.getElementsByTagName ('head')[0];
if ( !head ) { return; }
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = 'table { margin-left: auto; margin-right: auto; }';
head.appendChild(style);