function setup_ratio(i) {
    var  o = $(i).offset();
    var xo = o.left;

    if (parseInt(navigator.appVersion) > 3) {
        if (navigator.appName=="Netscape") {
            winW = window.innerWidth;
        }
        else if (navigator.appName.indexOf("Microsoft") != -1) {
            winW = document.body.offsetWidth;
        }
    }

    var xroom = winW - (xo + 45);

    var ratio = 1.0;
    while( xroom < i.width*ratio )
        ratio -= 0.01;

    return ratio;
}

$(document).ready(function() {
    var ol = function(){
        var ratio = setup_ratio(this);

        var s = {
            orgw: this.width,
            orgh: this.height,
            neww: this.width*ratio,
            newh: this.height*ratio
        };

        $(this).animate({width: s.neww, height: s.newh}, 500).attr(s).click(function(){
            var t = $(this);
            if( Math.abs(t.attr("width") - t.attr("neww"))<=2 ) {
                t.animate({width: t.attr("orgw"), height: t.attr("orgh")}, 500);

            } else {
                t.animate({width: t.attr("neww"), height: t.attr("newh")}, 500);
            }
        });
    };

    $("img").each(function(){ $(this).load(ol); this.src = this.src; }); // workaround for a known bug

});