// preload the arrow //

if(document.images) {
  arrow = new Image(7,80); 
  arrow.src = "/Resources/Salesforce-Files/msg_arrow.gif"; 
}

// form validation function //
function validate(form) {

  var educationEnquiryType = form.elements[8].value; 
  var first_name = form.first_name.value;
  var last_name = form.last_name.value;
  var company = form.company.value;
  var schoolType = form.elements[12].value; 
  var street = form.street.value;
  var city = form.city.value;
  var state = form.state.value;
  var country = form.country.value;
  var zip = form.zip.value;  
  var email = form.email.value;
  var phone = form.phone.value;
  var fax = form.fax.value;
  var functionDate = form.elements[21].value;
  var educationProgram = form.elements[22].value;
  var noStudents = form.elements[23].value;
  var noTeachers = form.elements[24].value;
  var noAdults = form.elements[25].value;
  var ageOfStudents = form.elements[26].value;
  var entryTickets = form.elements[27].value;
  var subjectsTopics = form.elements[28].value;
  	

  var fNameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;

  
  
 if(educationEnquiryType == "") {
    inlineMsg('00N20000001W7Kb','Please enter the type of Education Enquiry.',2);
    return false;
  }
  
 if(first_name == "") {
    inlineMsg('first_name','Please enter your first name.',2);
    return false;
  } 
 if(last_name == "") {
    inlineMsg('last_name','Please enter your last name.',2);
    return false;
  } 
 if(company == "") {
    inlineMsg('company','Please enter your company.',2);
    return false;
  }
    
 if(schoolType == "") {
    inlineMsg('00N20000001W7Lw','Please enter the School Type.',2);
    return false;
  }
  
   if(street == "") {
    inlineMsg('street','Please enter your street address.',2);
    return false;
  }

  
   if(city == "") {
    inlineMsg('city','Please enter your City.',2);
    return false;
  } 

   if(state == "") {
    inlineMsg('state','Please enter your State.',2);
    return false;
  } 
  
   if(country == "") {
    inlineMsg('country','Please enter your Country.',2);
    return false;
  } 
  
  if(zip == "") {
    inlineMsg('zip','Please enter your postcode.',2);
    return false;
  }
   
if(!IsNumeric(zip)) {
    inlineMsg('zip','Please enter only numbers in the postcode field.',2);
    return false;
  }   
  
  if(email == "") {
    inlineMsg('email','Please enter your email address.',2);
    return false;
  }

  if(!email.match(emailRegex)) {
    inlineMsg('email','<strong>Error</strong><br />You have entered an invalid email.',2);
    return false;
  }
  
  if(phone == "") {
    inlineMsg('phone','Please enter your phone number.',2);
    return false;
  }
  
if(!IsNumeric(phone)) {
    inlineMsg('phone','Please enter only numbers in the phone field.',2);
    return false;
  }   
      
  if(fax == "") {
    inlineMsg('fax','Please enter your fax number.',2);
    return false;
  }
  
if(!IsNumeric(fax)) {
    inlineMsg('fax','Please enter only numbers in the fax field.',2);
    return false;
  }   
   
  if(functionDate == "") {
    inlineMsg('00N20000001gAG7','Please enter a date.',2);
    return false;
  }

if(!IsNumeric(functionDate)) {
    inlineMsg('00N20000001gAG7','Please enter only dd/mm/yyyy.',2);
    return false;
  }  

 if(educationProgram == "") {
    inlineMsg('00N20000001W7MB','Please enter the program.',2);
    return false;
  }

 if(noStudents == "") {
    inlineMsg('00N20000001W7MG','Please enter the number of students.',2);
    return false;
  }

if(!IsNumeric(noStudents)) {
    inlineMsg('00N20000001W7MG','Please enter only numbers.',2);
    return false;
  }  

 if(noTeachers == "") {
    inlineMsg('00N20000001W7M3','Please enter the number of teachers.',2);
    return false;
  }

if(!IsNumeric(noTeachers)) {
    inlineMsg('00N20000001W7M3','Please enter only numbers.',2);
    return false;
  }  

 if(noAdults == "") {
    inlineMsg('00N20000001W7L5','Please enter the number of additional adults.',2);
    return false;
  }

if(!IsNumeric(noAdults)) {
    inlineMsg('00N20000001W7L5','Please enter only numbers.',2);
    return false;
  }  

 if(ageOfStudents == "") {
    inlineMsg('00N20000001W7MH','Please choose.',2);
    return false;
  }

 if(entryTickets == "") {
    inlineMsg('00N20000001W7KZ','Please choose.',2);
    return false;
  }

 if(subjectsTopics == "") {
    inlineMsg('00N20000001W7MI','Please choose.',2);
    return false;
  }


form.submit();
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 3;
var MSGHIDE = 3;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
  var msg;
  var msgcontent;
  if(!document.getElementById('msg')) {
    msg = document.createElement('div');
    msg.id = 'msg';
    msgcontent = document.createElement('div');
    msgcontent.id = 'msgcontent';
    document.body.appendChild(msg);
    msg.appendChild(msgcontent);
    msg.style.filter = 'alpha(opacity=0)';
    msg.style.opacity = 0;
    msg.alpha = 0;
  } else {
    msg = document.getElementById('msg');
    msgcontent = document.getElementById('msgcontent');
  }
  msgcontent.innerHTML = string;
  msg.style.display = 'block';
  var msgheight = msg.offsetHeight;
  var targetdiv = document.getElementById(target);
  targetdiv.focus();
  var targetheight = targetdiv.offsetHeight;
  var targetwidth = targetdiv.offsetWidth;
  var topposition = topPosition(targetdiv) - ((msgheight - targetheight) / 2);
  var leftposition = leftPosition(targetdiv) + targetwidth + MSGOFFSET;
  msg.style.top = topposition + 'px';
  msg.style.left = leftposition + 'px';
  clearInterval(msg.timer);
  msg.timer = setInterval("fadeMsg(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsg()", (autohide * 1000));
}

// hide the form alert //
function hideMsg(msg) {
  var msg = document.getElementById('msg');
  if(!msg.timer) {
    msg.timer = setInterval("fadeMsg(0)", MSGTIMER);
  }
}

// face the message box //
function fadeMsg(flag) {
  if(flag == null) {
    flag = 1;
  }
  var msg = document.getElementById('msg');
  var value;
  if(flag == 1) {
    value = msg.alpha + MSGSPEED;
  } else {
    value = msg.alpha - MSGSPEED;
  }
  msg.alpha = value;
  msg.style.opacity = (value / 100);
  msg.style.filter = 'alpha(opacity=' + value + ')';
  if(value >= 99) {
    clearInterval(msg.timer);
    msg.timer = null;
  } else if(value <= 1) {
    msg.style.display = "none";
    clearInterval(msg.timer);
  }
}

// calculate the position of the element in relation to the left of the browser //
function leftPosition(target) {
  var left = 0;
  if(target.offsetParent) {
    while(1) {
      left += target.offsetLeft;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.x) {
    left += target.x;
  }
  return left;
}

// calculate the position of the element in relation to the top of the browser window //
function topPosition(target) {
  var top = 0;
  if(target.offsetParent) {
    while(1) {
      top += target.offsetTop;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.y) {
    top += target.y;
  }
  return top;
}

// validate the use of only numbers in the number field //
function IsNumeric(sText)
{
   var ValidChars = "0123456789./$";
   var IsNumber=true;
   var Char;
 
 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }