jq(document).ready(
        function () {
            var homepageImage = jq('#image-header');        
    
            var backgrounds = "http://extension.psu.edu/lancaster/background-images/holstein_calves.jpg".split(";");
            var backgroundAlignments = "center".split(";");
            var backgroundHeights = "145".split(";");
            var randomnumber = Math.floor(Math.random()*backgrounds.length) ;
            
            homepageImage.css("backgroundImage", "url(" + backgrounds[randomnumber] + ")");
            homepageImage.css("backgroundPosition", backgroundAlignments[randomnumber] + " top");
            homepageImage.css("paddingTop", backgroundHeights[randomnumber] + 'px');
            
            breadcrumbs = jq("#portal-breadcrumbs");

            if (backgrounds.length && breadcrumbs.length)
            {
                breadcrumbs.addClass("homepage");
            }
        }
    );