var numrow =0;
var linhkien = "";
var hangsanxuat = "";
var kieuchan = "";
var soluong = "";
var yeucau = "";
var tenkhachhang = "";
var diachigiaohang = "";
var sodienthoai = "";
var email = "";
var ngaydathang = "";
var ngaygiaohang = "";
var maxacnhan = "";
function addnewRow()
  {
    numrow++; 
	var rows = "";
    rows += " <tr class='row' id=row"+numrow+">";
	rows += " <td class='celltt'"+numrow+">"+(numrow+1)+"</td>";			
	rows += "		<td  class='cell'  >";
	rows += "       <input  type='text' class='inputwidth100'  id=tenlinhkien"+numrow+" />"; 
	rows += "		</td>	";
	rows += "		<td  class='cell' >";
	rows += "       <input  type='text'  class='inputwidth100' id=hangsanxuat"+numrow+" />"; 	 
	rows += "		</td>	";
	rows += "		<td class='cell' >";
	rows += "       <input  type='text'  class='inputwidth100' id=kieuchan"+numrow+" />"; 	 
	rows += "		</td>	";
	rows += "		<td  class='cell' >";
	rows += "       <input  type='text'   class='inputwidth50' id=soluong"+numrow+" />"; 	 		 
	rows += "		</td>	";
	rows += "		<td class='cell'>";
	rows += "		  <textarea  id=yeucaukhac"+numrow+" class=textaraewidth200 ></textarea>";	 
	rows += "		</td>	";
	
	rows += "</tr>	";
   
     $('.row:last').after(rows);
    
  }