jQUERY TOOLTIP callback $(".pickdrop").tooltip({ bodyHandler: function() { var div = $(this); var divd = "#"+div.attr("id") +"d"; if ($(divd).html()!='') return $(divd).html(); else { var result = $("<span/>").html("loading..."); var str = div.attr("name") orderId = str.substring(0, str.indexOf(":")); type = str.substring(str.indexOf(":")+1); $.get("yoururl.aspx?OrderId="+orderId+"&type="+type, function(data){ $(divd).html(data); result.html(data); }); return result; } }, delay: 0, showURL: false });