$(function() {
            var houseArray = new Array();
            $(".slb_nav_bnt").click(function() {
                var tempCount = 0;
                $("input[name='productCopareCB']").each(function() {
                    if ($(this).attr("checked") == true) {
                        houseArray[tempCount] = this;
                        tempCount += 1;
                    }
                });

                if (tempCount >= 2 && tempCount <= 3) {
                    var getUrl = "houseCompare.aspx?compareHouseId=";
                    $(houseArray).each(function() {
                        //返回到目标页
                        getUrl += $(this).val() + ",";
                    });
                    window.location.href =getUrl; 

                }
                else {
                    houseArray = new Array();
                    alert("房源要在2至3个之间");
                }

            });
        });