send table value to javascript in jsp (problem)

Posted 06 August 2012 - 12:05 PM

I want to pass tables's input tag quantity value to javascript and assign this value to the form's nquan value but it is not assigning the value.
This is the jsp code..

<div id="content">
<table id="ddReferences" cellpadding="15" style="text-align: center;" BORDER=1 CELLSPACING=1 RULES=ROWS FRAME=HSIDES>
    <tr >
    	<th>Type</th>
    	<th>Product Name</th>
    	<th>Model</th>
    	<th>Company</th>
    	<th>Price</th>
    	<th>Quantity</th>
    </tr>
    
    <% while(rst.next()){%>
    	<tr>
    		<td><%=rst.getString(1) %></td>
    		<td><%=rst.getString(2) %></td>
    		<td><%=rst.getString(3) %></td>
    		<td><%=rst.getString(4) %></td>
    		<td>Rs. <%=rst.getString(5) %></td>
    		<td><input type="text" name="quantity" value="1" size="3"></td>
    		<td><input type="button" name="add" value="Add To Cart" onclick="add(<%=rst.getInt("proID") %>, <%=rst.getInt("userID")%>)"></td>
    		
    		<td><input type="button" name="buy" value="Buy Now"></td>
    	
    	
    <%} %>
   
    </table>
    <form name="formx" method="get" action="Forward.jsp">
    	user<input type="text" name="nuser" value=""/>
		prod<input type="text" name="nprod" value=""/>
		<input type="hidden" name="nquan" value=""/>
    </form>

     	
  </div>

javascript code is:

function add(prod, user){
	var a = prod;
	var b = user;
	document.formx.nuser.value = a;
	document.formx.nprod.value = b;
        var refTab = document.getElementById('ddReferences');
        var node = refTab.rows[1].cells[5].getElementByTagName("input")[0].getElementById("in");
        var input = node.value;
        document.formx.nquan.value = input;
	document.formx.submit();
	
}