// form validation function //
function validate(form) {
  var FirstName = form.FirstName.value;
  var LastName = form.LastName.value;
  var Address1 = form.Address1.value;
  var City = form.City.value;
  var State = form.State.value;
  var Zipcode = form.Zipcode.value;
  var HomePhone = form.HomePhone.value;
  var Email = form.Email.value;
  var Case_Legal_Matter = form.Case_Legal_Matter.value;
  var NameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var EmailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var CityRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var ZipcodeRegex = /^\d{5}([\-]\d{4})?$/;
  var HomePhoneRegex = /^((\+\d{1,3}(-| )?\(?\d\)?(-| )?\d{1,5})|(\(?\d{2,6}\)?))(-| )?(\d{3,4})(-| )?(\d{4})(( x| ext)\d{1,5}){0,1}$/;
  if(FirstName == "") {
    inlineMsg('FirstName','You must enter your first name.',4);
    return false;
  }
  if(!FirstName.match(NameRegex)) {
    inlineMsg('FirstName','You have entered an invalid first name.',4);
    return false;
  }
  if(LastName == "") {
    inlineMsg('LastName','You must enter your last name.',4);
    return false;
  }
  if(!LastName.match(NameRegex)) {
    inlineMsg('Lastname','You have entered an invalid last name.',4);
    return false;
  }
  if(Address1 == "") {
    inlineMsg('Address1','You must enter your address.',4);
    return false;
  }
  if(City == "") {
    inlineMsg('City','You must enter a city.',4);
    return false;
  }
  if(!City.match(CityRegex)) {
    inlineMsg('City','You have entered an invalid city.',4);
    return false;
  }
  if(State == "") {
    inlineMsg('State','<strong>Error</strong><br />You must select a state.',4);
    return false;
  }
  if(Zipcode == "") {
    inlineMsg('Zipcode','You must enter your zip code.',4);
    return false;
  }
  if(!Zipcode.match(ZipcodeRegex)) {
    inlineMsg('Zipcode','You have entered an invalid zip code.',4);
    return false;
  }
  if(HomePhone == "") {
    inlineMsg('HomePhone','You must enter your home phone.',4);
    return false;
  }
  if(!HomePhone.match(HomePhoneRegex)) {
    inlineMsg('HomePhone','You have entered an invalid phone number.',4);
    return false;
  }
  if(Email == "") {
    inlineMsg('Email','<strong>Error</strong><br />You must enter your email.',4);
    return false;
  }
  if(!Email.match(EmailRegex)) {
    inlineMsg('Email','<strong>Error</strong><br />You have entered an invalid email.',4);
    return false;
  }
  if(Case_Legal_Matter == "") {
    inlineMsg('Case_Legal_Matter','Please take the time to describe your case or legal matter so we can better serve you.',4);
    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"; 
}