/* Copyright (c) 2006-2007, Marketo, Inc. All rights reserved. */
var Mkto = {
  kv : [],
  kvUrl : null,
  kvReferrer : null
};

Mkto.parseUrlParams = function(url) {
  var query;
  var q = url.indexOf('?');
  if (q > -1) {
    query = url.substr(q+1);
    var pairs = query.split("&");
    for (var i =0; i < pairs.length; i++) {
      var kvArray = pairs[i].split("=");
      Mkto.kv[kvArray[0]] = kvArray[1];
    }
  }
  return Mkto.kv;
}
  
Mkto.getValue =  function(key, kv) {
  if (typeof Mkto.kv[key] == 'string') {
    return decodeURIComponent(Mkto.kv[key].replace(/\+/g, ' '));
  } else {
    return "not found";
  }
}
 
Mkto.getReferrerParam = function(key) {
  return Mkto.getValue(key, Mkto.kvReferrer);
}
 
Mkto.getUrlParam = function(key) {
  return Mkto.getValue(key, Mkto.kvUrl);
}

 
Mkto.formSubmit = function(elt) {
  for (var i=0; i < elt.elements.length; i++) {
    Mkto.clearError(elt.elements[i]);
  }  
  var allowSubmit = true;
  for (var i=0; i < elt.elements.length; i++) {
    var fld = elt.elements[i];
    if (!Mkto.validateField(fld)) {
      allowSubmit = false;
    }
    if (fld.name == "cr") {
      fld.value = Mkto.getUrlParam("cr");
    }
    if (fld.name == "kw") {
      fld.value = Mkto.getUrlParam("kw");
    }
    if (fld.name == "searchstr") {
      fld.value = Mkto.getReferrerParam("q");
    }
  } 
  if (allowSubmit) {
    elt.submit();
  }
  return allowSubmit;
}

Mkto.validateField = function(fld) {
  var valid = true;
  var msg = null;
  var required = (fld.className.indexOf('mktFReq') != -1);
  if (typeof fieldValidate == 'function') {
     valid = fieldValidate(fld);
  }
  if (valid == 'skip') {
    valid = true;
  } else {
    var label = null;
    try {
      label = fld.parentNode.parentNode.getElementsByTagName('label')[0].innerHTML;
    } catch (e) {}
    if (valid === true) {
      if (required) {
        if ((fld.tagName.toUpperCase() == 'INPUT') || (fld.tagName.toUpperCase() == 'TEXTAREA'))  {
          if (fld.value.length == 0) {
            msg = "This field is required";
            try {
              msg = getRequiredFieldMessage(fld, label);
            } catch (e) {}
            Mkto.setError(fld, msg);
            valid = false;
          }
        } else if (fld.tagName.toUpperCase() == 'SELECT') {
          if (fld.selectedIndex == 0) {
            msg = "Please select a value for this field";
            try {
              msg = getRequiredFieldMessage(fld, label);
            } catch (e) {}
            Mkto.setError(fld, msg);
            valid = false;
          }
        }
      }
    }
    if (valid && required && (fld.className.indexOf('mktFormEmail') != -1)) {
      var emailValid = /^[a-zA-Z0-9]([a-zA-Z0-9_-])*(\.[a-zA-Z0-9][a-zA-Z0-9_-]*)*@[a-zA-Z0-9]([a-zA-Z0-9_-])*(\.[a-zA-Z0-9][a-zA-Z0-9_-]*)+$/;
      if (!emailValid.test(fld.value)) {
        msg = "Please enter a valid email address";
        try {
          msg = getEmailInvalidMessage(fld, label);
        } catch (e) {}
        Mkto.setError(fld, msg);
        valid = false;
      }
    }
    if (valid && required && (fld.className.indexOf('mktFormPhone') != -1)) {
      var phoneValidChars = /^[0-9()+. \t-]+$/;
      
      var digCount = 0;
      var digits = "0123456789";
      for (var ix = 0; ix < fld.value.length; ix++) {
        if (digits.indexOf(fld.value.charAt(ix)) != -1) {
          digCount++;
        }
      }
      
      if (!phoneValidChars.test(fld.value) || (digCount < 10) || (digCount > 15)) {
        msg = "Please enter a valid telephone number";
        try {
          msg = getTelephoneInvalidMessage(fld, label);
        } catch (e) {}
        Mkto.setError(fld, msg);
        valid = false;
      }
    }
  }
  return valid;
}

Mkto.getMessage = function(fld) {
  var msgContainer = fld.nextSibling;
  while (msgContainer && msgContainer.nodeType != 1) {
    msgContainer = msgContainer.nextSibling;
  }
  return msgContainer;
}

Mkto.addListener = function(elt, eventName, handler) {
  if (window.addEventListener) {
    elt.addEventListener(eventName, handler, false);
  } else if (window.attachEvent) {
    elt.attachEvent("on" + eventName, handler);
  }
}

Mkto.clearError = function(fld) {
  var loc = fld.parentNode.className.indexOf(" mktError");
  if (loc != -1) {
    fld.parentNode.className = fld.parentNode.className.substr(0, loc);
    fld.parentNode.parentNode.title = "";
    var msgContainer = Mkto.getMessage(fld);
    msgContainer.innerHTML = "";
  }
}

Mkto.clearOnClick = function(e) {
  var fld = this;
  if (fld == window) {
    fld = e.srcElement;
  }
  Mkto.clearError(fld);
}

Mkto.setError = function(fld, message) {
  fld.parentNode.className += " mktError";
  fld.parentNode.parentNode.title = message;
  var msgContainer = Mkto.getMessage(fld);
  msgContainer.innerHTML = message;
  msgContainer.style.left = (fld.parentNode.offsetWidth + 10) + "px";
  Mkto.addListener(fld, 'focus', Mkto.clearOnClick);
}

Mkto.formReset = function(elt) {
  for (var i=0; i < elt.elements.length; i++) {
    Mkto.clearError(elt.elements[i]);
  }  
  elt.reset();
  return true;
}
 
Mkto.preFillForm = function() {
  var theForm = mktoGetForm();
  if ((theForm) && (mktoPreFillFields)) {
    for (var fld in mktoPreFillFields) {
      if (theForm[fld] && typeof theForm[fld] == 'object') {
        var ff = theForm[fld];
        if ((ff.type == 'text') || (ff.type == 'textarea')) {
          if (!ff.value) {
            ff.value = mktoPreFillFields[fld];
          }
        } else if (ff.type == 'select-one') {
          if ((ff.selectedIndex == 0) && (!ff.multiple)) {
            for (var ix = 0; ix < ff.options.length; ix++) {
              if (ff.options[ix].value == mktoPreFillFields[fld]) {
                ff.selectedIndex = ix;
                break;
              }
            }
          }
        } else if (ff.type == 'checkbox') {
          if (mktoPreFillFields[fld]) {
            ff.setAttribute("checked", "checked");
          } else {
            ff.removeAttribute("checked");
          }
        } else if (!ff.type && ff.length) {
          // radio buttons
          var ff = theForm[fld];
          for ( var ix = 0; ix < ff.length; ix++) {
            if (ff[ix].value == mktoPreFillFields[fld]) {
              ff[ix].setAttribute("checked", "checked");
              break;
            }
          }
        }
      }
    }
  }
}

Mkto.init = function() {
  try {
    Mkto.preFillForm();
  } catch (e) {}
  Mkto.kvUrl = Mkto.parseUrlParams(window.location.search);
  Mkto.kvReferrer = Mkto.parseUrlParams(document.referrer);
}

Mkto.init();