(function(global) {

var data  = [imgsPath + "ico_processing.gif", 16, 16]
  , rpos  = [15, 15]
  , queue = []
  , indicator = new Element("div", { id: "mouseTrail", style: "position:absolute;top:0;left:0;z-index:9999;visibility:hidden;" })
  , img = new Element("img", { src: data[0], width: data[1], height: data[2], alt: "spinner" })
;

indicator.adopt(img);
document.body.adopt(indicator);

global.loading = {

    start: function(id) {
        queue.push(id);
        indicator.setStyle("visibility", "");
    },

    stop: function(id) {
        queue.remove(id);
        if( queue.length <= 0 ) indicator.setStyle("visibility", "hidden");
    }

};

document.addEvent("mousemove", function(ev) {
    ev = new Event(ev);

    var x = rpos[0] + ev.page.x;
    var y = rpos[1] + ev.page.y;

    if(x + data[1] > bW() + rX() - rpos[0] - data[1]) x = bW() + rX() - rpos[0] - data[1];
    if(y + data[2] > bH() + rY() - rpos[1] - data[2]) y = bH() + rY() - rpos[1] - data[2];

    sX(indicator,x);
    sY(indicator,y);
});

}(this));