js问题，请高手解决

代码如下： window.onload = function () {
        var color = new Select("color", {
            Radio: true, //是否为单选,默认为true,如果设置为true,Default,Max选项将失效
            
            OnClick:function (selected, selectedid) {
                var colortmp = selected.join(",");
                var arrcolor = new Array();
                arrcolor = colortmp.split("|");
                
                document.getElementById("Hcolor").value = arrcolor[0];
                document.getElementById("goodsColor").innerHTML = arrcolor[1];
                
                document.getElementById("Hsize").value ="";
                document.getElementById("goodsSize").innerHTML = "";
                $.post("./AjaxGetSize.aspx?sn=" + <%=product.ProdClsCode %> + '&color=' + selectedid, function (data) {
                    var tmp = "#size";
                    if (data != -1) {
                        tmpHtml = data;
                        $(tmp).html(tmpHtml);
                        var size = new Select("size", {
                            Radio: true, //是否为单选,默认为true,如果设置为true,Default,Max选项将失效
                            OnClick: function (selected) {
                                var sizetmp = selected.join(",");
                                var arrsize = new Array();
                                arrsize = sizetmp.split("|"); 
                                $('#Hsize').val(arrsize[0]);
                                
                                document.forms[0].size.value = arrsize[0];
                                document.getElementById("goodsSize").innerHTML = arrsize[1];
                            }
                        });
                    }
                });
                }
这段代码在IE上是没有问题的，为什么在ff上OnClick就失效了呢，请各位帮帮忙解决一下，谢谢！