Function I use to plot menu items around a fixed point on http://cmnd.li

plot.js

function plot(points, diameter, offset){    
    var x, y,
        angle = 0,
        links = $('nav a'),			
        increase = Math.PI * 2 / points;

    for (var i=0; i <= points; i++) {		
        x = diameter * Math.cos(angle) + offset
        y = diameter * Math.sin(angle) + offset
        angle += increase
        $(links[i]).css({left: x, top: y});
    }
}