// form validation function //
function validate(form) {
  var name = form.Name.value;
  var curaddress = form.CurAddress.value;
  var curzip = form.CurZip.value;
  var mainphone = form.MainPhone.value;
  var email = form.Email.value;
  var bdate = form.BirthDate.value;
  var curempname = form.CurEmp.value;
  var curempphone = form.CurEmpPhone.value;
  var curempaddress = form.CurEmpAddress.value;
  var curemplength = form.CurEmpLength.value;
  var curemptitle = form.CurEmpTitle.value;
  var curempsalary = form.CurEmpSalary.value;
  var prevempname = form.PrevEmp.value;
  var prevempaddress = form.PrevEmpAddress.value;
  var prevemplength = form.PrevEmpLength.value;
  var preempsalary = form.PrevEmpSalary.value;
  var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var messageRegex = new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);
  
  if(name == "") {
    inlineMsg('name','Required',5);
    return false;
  }
  if(!name.match(nameRegex)) {
    inlineMsg('name','Required',5);
    return false;
  }
  if(curaddress == "") {
    inlineMsg('curaddress','Required',5);
    return false;
  }
  if(curzip == "") {
    inlineMsg('curzip','Required',5);
    return false;
  }
  if(mainphone == "") {
    inlineMsg('mainphone','Required',5);
    return false;
  }
  if(email == "") {
    inlineMsg('email','Required',5);
    return false;
  }
  if(bdate == "") {
    inlineMsg('bdate','Required',5);
    return false;
  }
  if(curempname == "") {
    inlineMsg('curempname','Required',5);
    return false;
  }
  if(curempphone == "") {
    inlineMsg('curempphone','Required',5);
    return false;
  }
  if(curempaddress == "") {
    inlineMsg('curempaddress','Required',5);
    return false;
  }
  if(curemplength == "") {
    inlineMsg('curemplength','Required',5);
    return false;
  }
  if(curemptitle == "") {
    inlineMsg('curemptitle','Required',5);
    return false;
  }
  if(curempsalary == "") {
    inlineMsg('curempsalary','Required',5);
    return false;
  }
  if(prevempname == "") {
    inlineMsg('prevempname','Required',5);
    return false;
  }
  if(prevempaddress == "") {
    inlineMsg('prevempaddress','Required',5);
    return false;
  }
  if(prevemplength == "") {
    inlineMsg('prevemplength','Required',5);
    return false;
  }
  if(preempsalary == "") {
    inlineMsg('preempsalary','Required',5);
    return false;
  }
  if(!email.match(emailRegex)) {
    inlineMsg('email','Valid Email Required',5);
    return false;
  }
  return true;
}

// 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;
}

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