var alnum = 3;
 		albums = ["","perfect","weddingbells","letscelebrate","confetti"];
 		    
    function openBook() {
        if (window.location.href.indexOf('services.com') != -1) 
        	window.location.href="http://services.ccagroup.co.uk/htbin/services.com?"+albums[alnum]+".html";
        else
    	 	window.location.href=albums[alnum]+".html";
    }