$(document).ready(function () {
    try {
        $(".topLogo").LimitImg(80, 80);
    } catch (e) { alert(); };

    try {
        $("#expoImg img").each(function () {
            $(this).LimitImg(154, 120);
        });
    } catch (e) { /**/ };

});

$.fn.LimitImg = function (width, height) {
    var img = $(this);
    if (img.width() <= width && img.height() <= height)
        return;

    if (img.width() > width || img.height() > height) {
        if (img.height() <= height && img.width() > width)
            img.width(width);
        else if (img.height() > height && img.width() <= width)
            img.height(height);
        else {
            img.height(img.height() * width / img.width());
            img.width(width);
            if (img.height() > height) {
                img.width(width*height/img.height());
                img.height(height);
            }
        }
        return;
    }
}