// random ID generator //
function randomID(length) {
  chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
  pass = "";

  for(x=0;x<length;x++) {
    i = Math.floor(Math.random() * 62);
    pass += chars.charAt(i);
  }
  return pass;
}

var verifyID = randomID(10);

// maxlength
function ismaxlength(obj){
  var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
  if (obj.getAttribute && obj.value.length>mlength) {
    obj.value=obj.value.substring(0,mlength)
  }
}

// form validation function //
function validatePromo(form) {
  
  var first_name = form.first_name.value;
  var last_name = form.last_name.value;
  var company = form.company.value;
  var phone = form.phone.value;
  var email = form.email.value;
  var street = form.street.value;
  var city = form.city.value;
  var state = form.state.value;
  var zip = form.zip.value;
  var country = form.country.value;
  
  var verify = document.getElementById(verifyID).value;
  //var securitycode = form.securitycode.value;//
  
  var firstnameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var lastnameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;   
  
  if(first_name == "") {
    inlineMsg('first_name','You must enter your first name.',2);
    return false;
  }
  if(!first_name.match(firstnameRegex)) {
    inlineMsg('first_name','You have entered an invalid name.',2);
    return false;
  }
  if(last_name == "") {
    inlineMsg('last_name','You must enter your last name.',2);
    return false;
  }
  if(!last_name.match(lastnameRegex)) {
    inlineMsg('last_name','You have entered an invalid name.',2);
    return false;
  } 
  if(company == "") {
    inlineMsg('company','You must enter your company name.',2);
    return false;
  }
  if(phone == "") {
    inlineMsg('phone','You must enter your shop phone number.',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(street == "") {
    inlineMsg('street','You must enter your address.',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(zip == "") {
    inlineMsg('zip','You must enter your zip/postal code.',2);
    return false;
  }
  if(country == "") {
    inlineMsg('country','You must enter your country.',2);
    return false;
  }
  //if(securitycode != verify) {//
    //inlineMsg('securitycode','You must enter the correct security code.',2);//
    //return false;//
  //}//
  //if(securitycode != verify) {//
    //inlineMsg('securitycode','You must enter the correct security code.',2);//
    //return false;//
  //}
  return true;
}

// start of message script //
var MSGTIMER = 10;
var MSGSPEED = 3;
var MSGOFFSET = 2;
var MSGHIDE = 2;

// 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 = "http://www.alldata.com/includes/img/form/msg_arrow.gif"; 
}