random tag colors

Tag coloring javascript

function hsv_to_rgb(h, s, v) {
    // http://nofunc.org/Color_Conversion_Library/
    var R, G, A, B, C, S=s/255, V=v/255, H=h/255;
    if(S>0) { 
        if(H>=1) H=0;
        H=6*H; F=H-Math.floor(H);
        A=Math.round(255*V*(1-S));
        B=Math.round(255*V*(1-(S*F)));
        C=Math.round(255*V*(1-(S*(1-F))));
        V=Math.round(255*V); 
        switch(Math.floor(H)) {
            case 0: R=V; G=C; B=A; break;
            case 1: R=B; G=V; B=A; break;
            case 2: R=A; G=V; B=C; break;
            case 3: R=A; G=B; B=V; break;
            case 4: R=C; G=A; B=V; break;
            case 5: R=V; G=A; B=B; break;
        }
        return({r:R?R:0, g:G?G:0, b:B?B:0, a:1});
    }
    else return({r:(V=Math.round(V*255)), g:V, b:V, a:1});
};
rgb = hsv_to_rgb(202,48,191);
$(function(){
    $('a.tag').each(function(){
        var h = Math.min($(this).text().length * 25, 255);
        var rgb = hsv_to_rgb(h,48,191);
        $(this).css('background-color', 
        'rgb(' + rgb.r + ',' + rgb.g + ',' + rgb.b+ ')');
    });
});