$(function () {
    var height, images, paddingTop;
    imgCount = $("div.thumbs img").size();
    if(imgCount > 0) {
        height =  parseInt((imgCount / 4), 10) * 50;
        if(imgCount % 4 > 0 ) {
            height += 50;
        }
        if(imgCount > 16) {
            height += 10;
        } else {
            height += 5;
        }
        paddingTop = 300 - height;
        $("div.thumbs").css({
            "padding-top": paddingTop + "px",
            "height": height + "px"
        });
    }
});