// form validation function //
function validate(form) {
  var Position = form.Position.value;
  var Date_Available = form.Date_Available.value;
  var FName = form.FName.value;
  var Phone = form.Phone.value;
  var Address = form.Address.value;
  var City = form.City.value;
  var PC = form.PC.value;
  var Email = form.Email.value;
  var HSchool = form.HSchool.value;
  var HDiploma = form.HDiploma.value;
  var skills = form.skills.value;
  var Before = form.Before.value;
  var Shift = form.Shift.value;
  var Relocate = form.Relocate.value;
  var Hobbies = form.Hobbies.value;
  var RName1 = form.RName1.value;
  var RPhone1 = form.RPhone1.value;
  var RName2 = form.RName2.value;
  var RPhone2 = form.RPhone2.value;
  var Signature = form.Signature.value;


  var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
 
  if(Position == "") {
    inlineMsg('Position','Enter the position you are applying for.',2);
    return false;
  }
  
  if(Date_Available == "") {
    inlineMsg('Date_Available','What date are you available to work',2);
    return false;
  }

  if(FName == "") {
    inlineMsg('FName','Please tell us your name.',2);
    return false;
  }

  if(Phone == "") {
    inlineMsg('Phone','You must enter your phone number.',2);
    return false;
  }  
  
  if(Address == "") {
    inlineMsg('Address','Please provide your address.',2);
    return false;
  }

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

  if(PC == "") {
    inlineMsg('PC','Please provide your postal code.',2);
    return false;
  }

  if(Email == "") {
    inlineMsg('Email','You must enter your email address.',2);
    return false;
  }
  if(!Email.match(emailRegex)) {
    inlineMsg('Email','You have entered an invalid email address.',2);
    return false;
  } 


  if(HSchool == "") {
    inlineMsg('HSchool','Did you earn your high school diploma (OSSD)',2);
    return false;
  }

  if(skills == "") {
    inlineMsg('skills','Tell us some of your skills.',2);
    return false;
  }

  if(Before == "") {
    inlineMsg('Before','Have you ever been employed by Halton Honda before',2);
    return false;
  }

  if(Shift == "") {
    inlineMsg('Shift','Will you work shift-work',2);
    return false;
  }

  if(Relocate == "") {
    inlineMsg('Relocate','Are you willing to relocate',2);
    return false;
  }

  if(Hobbies == "") {
    inlineMsg('Hobbies','Tell us a few of your hobbies.',2);
    return false;
  }

  if(RName1 == "") {
    inlineMsg('RName1','Please give us your first references name.',2);
    return false;
  }

  if(RPhone1 == "") {
    inlineMsg('RPhone1','Please give us your first references phone number.',2);
    return false;
  }

  if(RName2 == "") {
    inlineMsg('RName2','Please give us your second references name.',2);
    return false;
  }

  if(RPhone2 == "") {
    inlineMsg('RPhone2','Please give us your second references phone number',2);
    return false;
  }

  if(Signature == "") {
    inlineMsg('Signature','Please provide us with your name confirmation.',2);
    return false;
  }
  
  
  return true;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 9;
var MSGOFFSET = 3;
var MSGHIDE = 6;

// 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 * 1700));
}

// 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;
}

// preload the arrow //
if(document.images) {
  arrow = new Image(7,80); 
  arrow.src = "images/msg_arrow.gif"; 
}