//Gets the browser specific XmlHttpRequest Object
function getXmlHttpRequestObject() {
 if (window.XMLHttpRequest) {
    return new XMLHttpRequest(); //Mozilla, Safari ...
 } else if (window.ActiveXObject) {
    return new ActiveXObject("Microsoft.XMLHTTP"); //IE
 } else {
    //Display our error message
    alert("Your browser doesn't support the XmlHttpRequest object.");
 }
}


//Our XmlHttpRequest object
var receiveReq = getXmlHttpRequestObject();


//Initiate the AJAX request
function makeRequest(url, param) {

//If our readystate is either not started or finished, initiate a new request
 if (receiveReq.readyState == 4 || receiveReq.readyState == 0) {
   //Set up the connection to captcha_test.html. True sets the request to asyncronous(default) 
   receiveReq.open("POST", url, true);
  
   //Set the function that will be called when the XmlHttpRequest objects state changes
   receiveReq.onreadystatechange = updatePage; 

   //Add HTTP headers to the request
   receiveReq.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
   receiveReq.setRequestHeader("Content-length", param.length);
   receiveReq.setRequestHeader("Connection", "close");
	
		
   //Make the request
   receiveReq.send(param);
   
 }   
}

//Called every time our XmlHttpRequest objects state changes
function updatePage() {
 //Check if our response is ready
 if (receiveReq.readyState == 4) {
   //Set the content of the DIV element with the response text
   document.getElementById('result').innerHTML = receiveReq.responseText;
   //Get a reference to CAPTCHA image
   img = document.getElementById('imgCaptcha'); 
   //Change the image
   img.src = 'http://www.randomcube.co.uk/captcha/create_image.php?' + Math.random();
   document.rank.elements[2].value = "";
   document.rank.elements[3].value = "";
 }
}

function Filter(){ 

//alert('theForm-' + document.forms[0].elements[4].value); 
 if(document.rank.elements[0].checked){
	ee=1;
	 //alert(document.forms[0].elements[0].value + "= " + ee); 
 }
  if(document.rank.elements[1].checked){
	ee=-1;
	 
 }
 

if(ee){

img = document.getElementById('wait'); 
img.src = 'http://www.randomcube.co.uk/images/delay.gif';
img.width = 100;
img.height = 8;
	
var postStr = 'information' + "=" + encodeURIComponent( document.rank.elements[2].value ) + "##" + encodeURIComponent( document.rank.elements[3].value ) + "##" + encodeURIComponent( document.rank.elements[5].value ) + "##" + encodeURIComponent( ee );
	
	var url = 'http://www.randomcube.co.uk/ajax/filter.php';

	makeRequest(url, postStr);

	}
}