webservices with jquery

int m = 20;
       SqlConnection objConnection = new SqlConnection(@"Data Source=STANZOO-FE82BEA\SQLEXPRESS;Initial Catalog=stanzoo;Integrated Security=True");
       SqlDataAdapter objdata = new SqlDataAdapter("select distinct categoryid,category from items where category like '" + hdntxtcategories.Value.ToString() + "%'", objConnection);
       SqlDataAdapter objdata1 = new SqlDataAdapter("select Top 10 subcategoryid,subcategory from items where subcategory like '" + hdntxtcategories.Value.ToString() + "%'", objConnection);
       DataSet objdataset = new DataSet();
       DataSet objdataset1 = new DataSet();
       objdata.Fill(objdataset, "Categories");
       objdata1.Fill(objdataset1, "SubCategories");
       string constructTable = "<table border='1' cellpadding='5' cellspacing='5' height='150px'>";
       constructTable += "<tr><td style='vertical-align:top'>";
       constructTable += "<div id='s' style='background-color:red;width:150px;align:center'>Categories</div>";
       for (int i = 0; i < objdataset.Tables[0].Rows.Count; i++)
       {
           // int s=0;
           //s++;
           HiddenField1.Value = objdataset.Tables[0].Rows.Count.ToString();
           constructTable += "<a style='cursor:pointer';  onclick='javascript:ShowCategory(" + objdataset.Tables[0].Rows[i]["categoryid"].ToString() + ")'><div id='" + i + "'>" + objdataset.Tables[0].Rows[i]["category"] + "</div></a>";
       }
       constructTable += "</td><td style='vertical-align:top'>";
       constructTable += "<div style='background-color:red;width:150px;align:center'>Sub Categories</div>";
       for (int i = 0; i < objdataset1.Tables[0].Rows.Count; i++)
       {
           HiddenField2.Value = objdataset1.Tables[0].Rows.Count.ToString();
           constructTable += "<div id=" + m + " style='cursor:hand' onclick='javascript:ShowSubcategory(" + objdataset1.Tables[0].Rows[i]["subcategoryid"].ToString() + ")'>" + objdataset1.Tables[0].Rows[i]["subcategory"] + "</div>";
           m++;
       }
       constructTable += "</td></tr></table>";
       divTable.InnerHtml = constructTable;