// JavaScript Document
function first_image()
{
  var age = document.getElementById('age').value;
  var next = document.getElementById('next').value;
  var ref_id = document.getElementById('ref_id').value;
  var url = "/ajax/first_image.php?age="+age+"&next="+next+"&ref_id="+ref_id;
  //alert(url);
  sendRequest_next_image(url);   
}

function next_image()
{
  var age = document.getElementById('age').value;
  var next = document.getElementById('next').value;
  var ref_id = document.getElementById('ref_id').value;
  var answer = document.getElementById('answer').value;
  var q_id = document.getElementById('q_id').value;
  var url = "/ajax/next_image.php?age="+age+"&next="+next+"&ref_id="+ref_id+"&answer="+answer+"&q_id="+q_id;
  //alert(url);
  sendRequest_next_image(url);   
}

function stateChanged_next_image()
{ 
  if (xmlHttp.readyState==4)
  { 
    //alert(xmlHttp.responseText);
    document.getElementById('question_div').innerHTML=xmlHttp.responseText;
  }
}

function sendRequest_next_image(url)
{
	xmlHttp = createXMLHttpRequest();

	if (xmlHttp)
	{
	  xmlHttp.onreadystatechange=stateChanged_next_image;
		xmlHttp.open("GET", url, true);
		xmlHttp.send("");
	}
}