var xHRObject = false;
  if (window.XMLHttpRequest)
  {
  xHRObject = new XMLHttpRequest();
  }
  else if (window.ActiveXObject)
  {
  xHRObject = new ActiveXObject("Microsoft.XMLHTTP");
  }
  
  function getData()
  {
     
      if (xHRObject.readyState == 4)
      {
       
          if (xHRObject.status == 200)
          {
              var serverResponse = xHRObject.responseXML;
              var header = serverResponse.getElementsByTagName("book");
              var spantag = document.getElementById("cart");
              spantag.innerHTML = "";
              for (i=0; i<header.length; i++)
              {
             
                  if (window.ActiveXObject)
                  {
                      spantag.innerHTML += " " +header[0].firstChild.text;
                      spantag.innerHTML += " " + header[0].lastChild.text + " " + "<a href='#' onclick='AddRemoveItem(\"Remove\");'>Remove Item</a>";
                  }
                  else
                  {
                      spantag.innerHTML += " " +header[0].firstChild.textContent;
                      spantag.innerHTML += " " + header[0].lastChild.textContent + " " + "<a href='#' onclick='AddRemoveItem(\"Remove\");'>Remove Item</a>";
                  }
              }
          }
      }
  }
  
  function AddRemoveItem(action)
  {
            var book  = document.getElementById("book").innerHTML;
             
            if(action=="Add")
            {
              xHRObject.open("GET", "ManageCartServlet?action=" + action + "&book=" + encodeURIComponent(book) + "&value=" + Number(new Date), true);
            }
            else
            {
          
             xHRObject.open("GET", "ManageCartServlet?action=" + action + "&book=" + encodeURIComponent(book) + "&value="  + Number(new Date), true);
            }
            xHRObject.onreadystatechange = getData;
            xHRObject.send(null);   
  }