คำนวนค่าจำนวนสินค้าและหน่วยสินค้ามาไม่ออกอะครับมือใหม่ครับ

function calAmountintline(){
	var intLine = 0;
intLine++;
    var qq = document.getElementById('quantity19'+intLine).value;
    var nn = document.getElementById('unit_price19'+intLine).value;
    var amoline=0;
    for(var z=0;z<qq;z++){
        for(var x=0;x<nn;x++){
		if(qq > 0 && nn > 0)
	
		
		amoline = parseFloat(qq) * parseFloat(nn);
	   }
    }
	document.getElementById('amount11'+intLine).value = amoline;
	
    //document.getElementById('amount').value = amoline;
}

function CreateNewRow()
    {
        
        var intLine = parseInt(document.form1.hdnMaxLine.value);
        intLine++;
            
        var theTable = document.all.tbExp
        var newRow = theTable.insertRow(theTable.rows.length)
        newRow.id = newRow.uniqueID
        
        var item1 = 1
        var newCell
        
     
        //*** Column 3 ***//
        newCell = newRow.insertCell(2)
        newCell.id = newCell.uniqueID
        newCell.setAttribute("className", "css-name");
        newCell.innerHTML = "<td><div align=center><INPUT TYPE=\"TEXT\" SIZE=\"20\" NAME=\"quantity19"+intLine+"\" VALUE=\"\" CLASS=\"textb11\"  ID=\"quantity19"+intLine+"\" onkeyup=\"calAmountintline()\"></div></td>"             
        
 
        //*** Column 5 ***//
        newCell = newRow.insertCell(4)
        newCell.id = newCell.uniqueID
        newCell.setAttribute("className", "css-name");
        newCell.innerHTML = "<td><div align=center><INPUT TYPE=\"TEXT\" SIZE=\"8\" NAME=\"unit_price19"+intLine+"\" VALUE=\"\" CLASS=\"textb11\" ID=\"unit_price19"+intLine+"\" onkeyup=\"calAmountintline()\"></div></td>" 
         newCell = newRow.insertCell(5)
        newCell.id = newCell.uniqueID
        newCell.setAttribute("className", "css-name");
        newCell.innerHTML = "<td><div align=center><INPUT TYPE=\"TEXT\" SIZE=\"20\" NAME=\"amount\"  CLASS=\"textb11\" onblur=\"calTotal()\" ID=\"amount11"+intLine+"\" VALUE=\"0\"></div></td></tr>"          
        

        document.form1.hdnMaxLine.value = intLine;
    
    }