// Loads a stylesheet at random. Pass each stylesheet as an argument.
function loadRandomStylesheets(stylesheets)
{
    if(arguments.length < 1) return false;
    var url = arguments[Math.round(Math.random() * (arguments.length - 1))];
    var html = '<style type="text/css">\
                @import url(' + url + ');\
                </style>';
    document.write(html);
    return true;
}