// form validation function //
function validate(form) {
  var checkindate = form.checkindate.value;
  var checkinmonth = form.checkinmonth.value;
  var checkinyear = form.checkinyear.value;
  var selecthours = form.selecthours.value;
  var selectmins = form.selectmins.value;
  var selectam = form.selectam.value;
  var checkoutdate = form.checkoutdate.value;
  var checkoutmonth = form.checkoutmonth.value;
  var checkoutyear = form.checkoutyear.value;
  var adults = form.adults.value;
  var single = form.single.value;
  var firstname = form.firstname.value;
  var email = form.email.value;
  var contact_no = form.contact_no.value;
  var city = form.city.value;
  var country = form.country.value;
  
  var firstnameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var contact_noRegex = /^[0-9]+(([\ '\+,\.\- ][0-9])?[0-9]*)*$/;
  var cityRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  
    if(checkindate == "") {
    inlineMsg('checkindate','Pleas Select Check In Date');
    return false;
  }
  
    if(checkinmonth == "") {
    inlineMsg('checkinmonth','Pleas Select Check In Month');
    return false;
  }
  
    if(checkinyear == "") {
    inlineMsg('checkinyear','Pleas Select Check In Year');
    return false;
  }
  
    if(selecthours == "") {
    inlineMsg('selecthours','Pleas Select Hours');
    return false;
  }
  
     if(selectmins == "") {
    inlineMsg('selectmins','Pleas Select Minuts');
    return false;
  }
  
      if(selectam == "") {
    inlineMsg('selectam','Pleas Select Am or Pm');
    return false;
  }
  
      if(checkoutdate == "") {
    inlineMsg('checkoutdate','Pleas Select Check out Date');
    return false;
  }
  
    if(checkoutmonth == "") {
    inlineMsg('checkoutmonth','Pleas Select Check out Month');
    return false;
  }
  
    if(checkoutyear == "") {
    inlineMsg('checkoutyear','Pleas Select Check out Year');
    return false;
  }
 
   if(adults == "") {
    inlineMsg('adults','You must enter No. of Guests');
    return false;
  }
  
   if(single == "") {
    inlineMsg('single','You must enter No. of Rooms Required');
    return false;
  }
  
   if(firstname == "") {
    inlineMsg('firstname','You must enter your name.',2);
    return false;
  }
  if(!firstname.match(firstnameRegex)) {
    inlineMsg('firstname','You have entered an invalid name.',2);
    return false;
  }
  
  if(email == "") {
    inlineMsg('email','<strong>Error</strong><br />You must enter your email.',2);
    return false;
  }
  if(!email.match(emailRegex)) {
    inlineMsg('email','<strong>Error</strong><br />You have entered an invalid email.',2);
    return false;
  }
  
     if(contact_no == "") {
    inlineMsg('contact_no','<strong>Error</strong><br />You must enter your Contact Number.',2);
    return false;
  }
  if(!contact_no.match(contact_noRegex)) {
    inlineMsg('contact_no','<strong>Error</strong><br />You have entered an Contact Number.',2);
    return false;
  }
  
     if(city == "") {
    inlineMsg('city','You must enter your city.',2);
    return false;
  }
  if(!city.match(cityRegex)) {
    inlineMsg('city','You have entered an invalid city.',2);
    return false;
  }
  
     if(country == "") {
    inlineMsg('country','Pleas Select Your Country');
    return false;
  }
 
}

// 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"; 
}