// JavaScript Document
var xmlHttp;

var params;
var row;


	

function addChildRow() {
	
	// Get the value of the last row
	row = Number(document.register.row.value);

	xmlHttp=GetXmlHttpObject();
   if (xmlHttp==null)
   {
 	 alert ("Your browser does not support AJAX!");
  	 return;
  	} 
	params = "row=" + row;
	var url="/create_child_row.php";
	xmlHttp.onreadystatechange=stateChanged3;
	xmlHttp.open("POST",url,true);
	//Send the proper header information along with the request
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", params.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(params);
}

function stateChanged3() 
{ 
if (xmlHttp.readyState==4)
{ 

	var pTag = document.createElement("div");

	pTag.innerHTML = xmlHttp.responseText;
	
	document.getElementById("children").appendChild(pTag);
	
	document.register.row.value = row + 1;
}
}



function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}