//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;
//NEED THIS VALUE \/  \/  \/ 
   RtnVal=receiveReq.responseText;

   //Get a reference to CAPTCHA image
   img = document.getElementById('imgCaptcha'); 
   //Change the image
   img.src = 'php/CreateImage.php?' + Math.random();

 }
 
}


//**  Called every time when form is perfomed  **//

function getParam(theForm) {
//Set the URL
	
 var url = 'php/VerifyCapBus.php';          
 //Set up the parameters of our AJAX call
 var postStr = theForm.txtCaptcha.name + "=" + encodeURIComponent( theForm.txtCaptcha.value );
 //Call the function that initiate the AJAX request
 //makeRequest(url, postStr);

 	//use jquery instead
 	bodyContent = $.ajax({
	     url: url,
	     global: false,
	     type: "POST",
	     data: postStr,
	     success: function(msg){
	        //alert(msg);
	        document.getElementById('result').innerHTML = msg;

	        var pattern = "imgCaptcha";
	    	var result = msg.match(pattern);

	      	if(result == null) {
	      		//window.alert("capt results \n" + result );

	      		//if successfull captcha code check form before submitting it
	      		if( FormSubmit() != false ) {	
	      			return document.BusActForm.submit();
	      		} 
	      	} else {
		        //fail reset 
		        //Get a reference to CAPTCHA image
		        img = document.getElementById('imgCaptcha'); 
		        //Change the image
		        img.src = 'php/CreateImage.php?' + Math.random();
	      	}
	        
	     }
	  }
	).responseText;
             
//    alert("RtnValxx"+RtnVal);
// var abc;
// return(abc)
}