$(document).ready(function () {
    var slider = $("#slides>div");
    var i = 0;
    var width = 231;

    while (true){
        $(slider[i]).animate({width: "-=width"}, 1000);
        $(slider[i+1]).animate({width: "+=width"}, 1000);
        i < slider.length - 1 ? i++ : i = 0;
    }

});