javascript วนลูปอ่านค่าแล้วนำมาบวกกัน แต่เหมือนมันเจอ input text ตัวเดียว ทั้งที่มีอยู่หลายตัว

function CreateNewRow()
	{
		var intLine = parseInt(document.getElementById('hdnMaxLine').value);
		intLine++;
			
		var theTable = document.all.tbExp
		var newRow = theTable.insertRow(theTable.rows.length)
		newRow.id = newRow.uniqueID

		var newCell
		
		//*** Column 1 ***//
		newCell = newRow.insertCell(0);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "css-name");
		newCell.innerHTML = "<center><SELECT NAME=\"Column1_"+intLine+"\" ID=\"Column1_"+intLine+"\"></SELECT></center>";

		//*** Column 2 ***//
		newCell = newRow.insertCell(1);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "fieldcell");
		newCell.innerHTML = "<center><INPUT TYPE=\"TEXT\" SIZE=\"5\" NAME=\"Column2_"+intLine+"\" ID=\"Column2_"+intLine+"\"  VALUE=\"\"></center>";
		
		//*** Column 3 ***//
		newCell = newRow.insertCell(2);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "moneycell");
		newCell.innerHTML = "<center><INPUT TYPE=\"TEXT\" SIZE=\"5\" NAME=\"Column3_"+intLine+"\" ID=\"Column3_"+intLine+"\" OnKeyUp=\"fnccal1();\" VALUE=\"\"></center>";
		
		//*** Column 4 ***//
		newCell = newRow.insertCell(3);
		newCell.id = newCell.uniqueID;
		newCell.setAttribute("className", "moneycell");
		newCell.innerHTML = "<center><INPUT TYPE=\"TEXT\" SIZE=\"5\" NAME=\"Column4_"+intLine+"\" ID=\"Column4_"+intLine+"\" OnKeyUp=\"fnccal2();\" VALUE=\"\"></center>";
		
		
		 document.getElementById('hdnMaxLine').value =  intLine
	}
	
	function RemoveRow()
	{
		var intLine = parseInt(document.getElementById('hdnMaxLine').value);
		if(parseInt(intLine) > 0)
		{
				theTable = (document.all) ? document.all.tbExp : 
				document.getElementById("tbExp")
				theTableBody = theTable.tBodies[0];
				theTableBody.deleteRow(intLine);
				intLine--;
		 document.getElementById('hdnMaxLine').value =  intLine
		}	
	}	

	function GenerateRow()
	{
		var intRows = parseInt(document.getElementById('txtCount').value);
		for(i=0;i<intRows;i++)
		{
			CreateNewRow();
		}
	}

function fnccal1()
{
	var numrows = parseInt(document.getElementById('hdnMaxLine').value);
	for(intLine=1;intLine<numrows;intLine++)
	{
		var total = 0;
		if(document.getElementById && (element = document.getElementById('Column3_'+intLine)))
		{
			var sum = parseInt(document.getElementById('Column3_'+intLine).value);
			if(isNaN(sum))
			{
				sum = 0;
			}
			total += sum;
		}
		document.getElementById('Sumdebit').value = total;
	}
}