/* do not change */

function init_post_request() {

  this.fn_request = false;

  if (window.XMLHttpRequest) { // Mozilla, Safari,...
    this.fn_request = new XMLHttpRequest();
    if (this.fn_request.overrideMimeType) {
      this.fn_request.overrideMimeType('text/html');
    }
  }
  else if (window.ActiveXObject) { // IE
    try {
      this.fn_request = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
       try {
         this.fn_request = new ActiveXObject("Microsoft.XMLHTTP");
       } catch (e) {}
    }
  }
  if (!this.fn_request) {
    alert('Cannot create XMLHTTP instance');
    return false;
  }

}

function post_request(obj, url, parameters) {

  obj.open('POST', url, true);
  obj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  obj.setRequestHeader("Content-length", parameters.length);
  obj.setRequestHeader("Connection", "close");
  obj.send(parameters);

}

function build_query(frm) {
  var str = "";
  var element, i = 0;
  while ((element = document.getElementById(frm).elements[i++]) != null) {
      var qc = toQueryComponent(element);
      if (qc != "") str += "&" + qc;
  }
  return str.substring(1);
}

function toQueryComponent(input) {
    if (!input.name || input.disabled)
        return "";

    var n = urlencode(input.name);

    switch (input.type) {
    case "text":
    case "password":
    case "submit":
    case "hidden":
        return n + "=" + urlencode(input.value);
    case "textarea":
        // normalize line breaks as CR LF pairs as per RFC 1866
        var v = input.value.split(/\r\n|\r|\n/).join("\r\n");
        return n + "=" + urlencode(v);
    case "checkbox":
    case "radio":
        if (!input.checked)
            return "";
        //var v = getRealValue(input);
        var v = input.value;
        if (v === null) v = "on";
        return n + "=" + urlencode(v);
    case "select-one":
    case "select-multiple":
        var nvp = [];
        var opt, i = 0;
        while ((opt = input.options[i++]) != null) {
            if (opt.selected) {
                var v = getRealValue(opt);
                if (v === null) v = opt.text;
                // older versions of IE do not support Array.push
                nvp[nvp.length] = n + "=" + urlencode(v);
            }
        }
        return nvp.join("&");
    default:
        // input types reset, button, image, and file not implemented
        return "";
    }
}

function urlencode(str) {
    var v;
    try { v = encodeURIComponent(str); } catch (e) { v = escape(str); }
    return v.replace(/%20/g,"+");
}

function getRealValue(input) {
    var attr = input.getAttributeNode("value");
    return (attr && attr.specified) ? input.getAttribute("value") : null;
}

function launch_js(data) {
  // RegExp from prototype.sonio.net

  data = data.replace("<!--", "");
  data = data.replace("-->", "");

  var ScriptFragment = '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)';

  var match    = new RegExp(ScriptFragment, 'img');
  var scripts  = data.match(match);

    if(scripts) {
        var js = '';
        for(var s = 0; s < scripts.length; s++) {
            var match = new RegExp(ScriptFragment, 'im');
            js += scripts[s].match(match)[1];
        }
        eval(js);
    }
}

/* end of do not change  */

function change_opacity(id, opacStart, opacEnd, millisec) {
  //speed for each frame
  var speed = Math.round(millisec / 100);
  var timer = 0;

  //determine the direction for the blending, if start and end are the same nothing happens
  if(opacStart > opacEnd) {
    for(i = opacStart; i >= opacEnd; i--) {
      setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
      timer++;
    }

  } else if(opacStart < opacEnd) {
    for(i = opacStart; i <= opacEnd; i++)
      {
      setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
      timer++;
    }
  }

}

//change the opacity for different browsers
function changeOpac(opacity, id) {
  var object = document.getElementById(id).style;
  object.opacity = (opacity / 100);
  //object.MozOpacity = (opacity / 100);
  object.filter = "alpha(opacity=" + opacity + ")";
}

var featured_req ="";
function show_featured(doc_id) {
  var url   = "/ajax/featured_articles.ajx.php?doc_id=" + doc_id;
  query = "";
  tmp_http_req = new init_post_request();
  featured_req  = tmp_http_req.fn_request;
  featured_req.onreadystatechange = update_featured;
  post_request(featured_req, url, query);

}

function update_featured() {
  if (featured_req.readyState == 4 || featured_req.readyState == "complete")  {
    data = featured_req.responseText;
    change_opacity('featured_div', 100, 0, 500);
    setTimeout("document.getElementById(\"featured_div\").innerHTML = data; change_opacity('featured_div', 0, 100, 200);",500);
  }
}

var subscribe_req ="";
function subscribe(){
  var is_member;
  var email_add  = document.getElementById("subscribe_email").value;
  var subscriber = document.getElementById("subscribe_name").value;
  if(document.getElementById("is_member").checked){
    is_member = 1;
  }else{
    is_member = 0;
  }

  if(subscriber == "" || subscriber == "Name"){
    alert("Please enter your name.")
    return false;
  }
  if (email_add.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1){
    alert("Please enter a valid email address.")
    return false;
  }else{
    var url   = "/ajax/newsletter_subscription.ajx.php?cmd=subscribe&email=" + email_add + "&name=" + subscriber + "&is_member=" + is_member;
    query = "";
    //document.getElementById("subscribe_td").innerHTML = "Saving...";
    tmp_http_req = new init_post_request();
    subscribe_req  = tmp_http_req.fn_request;
    subscribe_req.onreadystatechange = update_subscribe;
    post_request(subscribe_req, url, query);
  }
}
function update_subscribe() {
  if (subscribe_req.readyState == 4 || subscribe_req.readyState == "complete")  {
    //data = subscribe_req.responseText;
    //document.getElementById("subscribe_td").innerHTML = data;
    //document.getElementById("subscribe_email").value = "";
    //document.getElementById("subscribe_name").value = "";
    //document.getElementById("is_member").checked = false;
    //alert("You have successfully subscribed to our newsletter.");
    data = subscribe_req.responseText;
    if (data.indexOf('Thank you')) {
      alert(data);
    }
    else {
      document.getElementById('subscribe_email').innerHTML = data;
    }

  }
}

var map_update_req = ""

function update_map(map_id) {

  var url   = "/ajax/maps.ajx.php?map_id=" + map_id;
  var query = "";
  document.getElementById('map_details').innerHTML = "Loading...";
  tmp_http_req    = new init_post_request();
  map_update_req = tmp_http_req.fn_request;

  map_update_req.onreadystatechange = update_map_details;

  post_request(map_update_req, url, query);

}

function update_map_details() {

  if (map_update_req.readyState == 4 || map_update_req.readyState == "complete") {
    data = map_update_req.responseText;
    document.getElementById('map_details').innerHTML = data;
    launch_js(data);
  }

}

var form_request = "";

function show_application_form(age) {

  if (age > 0) {
    if (age == 56) { form_type = "funeral_bond"; }
    else { form_type = "funeral_insurance" }

    var url   = "/ajax/application_form.ajx.php?form_type=" + form_type;
    var query = "";

    document.getElementById('application_form').innerHTML = "Loading form...";

    tmp_http_req  = new init_post_request();
    form_request  = tmp_http_req.fn_request;

    form_request.onreadystatechange = update_application_form;

    post_request(form_request, url, query);
  }

}

function update_application_form() {

  if (form_request.readyState == 4 || form_request.readyState == "complete") {
    data = form_request.responseText;
    document.getElementById('application_form').innerHTML = data;
    launch_js(data);
  }

}