// form validation function //
function validate(form) {
	var name = form.name.value;
	var address1 = form.address1.value;
	var phone = form.phone.value;
	var email = form.email.value;
	
	var city = form.city.value;
	var state = form.state.value;
	var zip = form.zip.value;			
	var areaPhone = form.areaPhone.value;
	
	var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
	var phoneRegex = /^(\+\d)*\s*(\(\d{3}\)\s*)*\d{3}(-{0,1}|\s{0,1})\d{2}(-{0,1}|\s{0,1})\d{2}$/;
	var areaPhoneRegex = /^[0-9]{3}/;
	var zipRegex = /^[\d]{5}(-[\d]{4})?$/;
	var stateRegex = /^[A-Za-z]{2}/;
	var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
	var address1Regex = new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);
 
  if(name == "") {
    inlineMsg('name','You must enter your name.',2);
    return false;
  }
  
  if(!name.match(nameRegex)) {
    inlineMsg('name','You have entered an invalid name.',2);
    return false;
  }

  if(address1 == "") {
    inlineMsg('address1','You must enter your address.',2);
    return false;
  }

  if(phone == "") {
    inlineMsg('phone','You must enter your phone number.',2);
    return false;
  }
  
  if(areaPhone == "") {
    inlineMsg('areaPhone','You must enter your area code.',2);
    return false;
  }
  
  if(!areaPhone.match(areaPhoneRegex)) {
    inlineMsg('areaPhone','You have entered an invalid area code.',2);
    return false;
  }
   
  if(!phone.match(phoneRegex)) {
    inlineMsg('phone','You have entered an invalid phone number.',2);
    return false;
  } 

   if(city == "") {
    inlineMsg('city','You must enter your city.',2);
    return false;
  }
  
   if(state == "") {
    inlineMsg('state','You must enter your state.',2);
    return false;
  }
  
  if(!state.match(stateRegex)) {
    inlineMsg('state','You have entered an invalid state.',2);
    return false;
  } 
  
   if(zip == "") {
    inlineMsg('zip','You must enter your zip code.',2);
    return false;
  }
  
  if(!zip.match(zipRegex)) {
    inlineMsg('zip','You have entered an invalid zip 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;
  }
  
// Area Code and Phone Number Validation //
  
  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 * 5000));
}

// 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 = "msg_arrow.gif"; 
}