//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) {

	receiveReq.open("POST", url, true);
   //Set the function that will be called when the XmlHttpRequest objects state changes
   receiveReq.onreadystatechange = updatePage; 

   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
 }
}

//Called every time when form is perfomed
function getParam(theForm,pageURL) {
 //Set the URL
 var url = 'http://www.keralatourism.org/modal/information-useful-post.php';
// var url = 'http://server/keralatourism.org/content/information-useful-post.php';
 var optUseVal;
  var email;
 if( theForm.optUse[0].checked==true) 
 { optUseVal='Yes'; name=theForm.name1.value;email=theForm.email1.value}
 else 
 { optUseVal='No'; name=theForm.name.value;email=theForm.email.value}
 
 //Set up the parameters of our AJAX call
 var postStr = "optUse=" + encodeURIComponent(optUseVal) +"&comments=" + encodeURIComponent(theForm.comments.value) +"&name=" +encodeURIComponent(name) +"&email=" +encodeURIComponent(email) +"&pageURL=" + encodeURIComponent(pageURL);
 //Call the function that initiate the AJAX request
// alert(postStr);
 makeRequest(url, postStr);
}