var artistsList = new Class({
    initialize: function () {
        new Tips('.artist', { className: 'artistArtworkPreview', title: "", text: this._getPreview, showDelay: 10, hideDelay: 10, fixed: true });
    },
    _getPreview:function(aElt) {
        return new Element("img", {"src" : aElt.get("rel")});
    }
});