function validate(form)
{
    var name = form.name.value;
    var email = form.email.value;                   
    var telephone = form.telephone.value;   
    var mobile = form.mobile.value;   
    
    var monthsA = form.monthsA.options[form.monthsA.options.selectedIndex].value;
    var dayA = form.dayA.value;
    var yearA = form.yearA.value;
    
    var monthsD = form.monthsD.options[form.monthsD.options.selectedIndex].value;
    var dayD = form.dayD.value;
    var yearD = form.yearD.value;
    
    var guests = form.guests.value;
    var enquiry = form.enquiry.value;
    
    var nameRegex = /^([a-z]{1,6}[ ']){0,3}([ÉÈÊËÜÛÎÔÄÏÖÄÅÇA-Z]{1}[éèëêüûçîôâïöäåa-z]{2,}[- ']){0,3}[A-Z]{1}[éèëêüûçîôâïöäåa-z]{2,}$/;
  var numberRegex = /^([0-9]{1,14})$/;
  var phoneRegex = /^(\(?((\+\d{1,3})?\)? ?(\(0\))? ?)|(0))(\d{9})|(((\(?(\+\d{1,3}\)?)? ?(\(0\))? ?)|(0))\(?(\d{2})( |-)((\d{3}))( |-)(\d{4})\)?)|[0](\d{2})( |-)(\d{7})$/;  
  var salaryRegex = /^\R?([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(.[0-9][0-9])?$/;
  var dateRegex = /^(\d{4}\-\d{1,2}\-\d{1,2})$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var messageRegex = /^[ .a-zA-Z0-9:-]{1,150}$/;
  var dayRegex = /^(\d{1,2})$/;
  var yearRegex = /^(\d{4})$/;  
  
  if (name == "")
  {
      inlineMsg('name','<strong>Error</strong><br />You must enter your Name.',2);
      return false;
  }
  if (!name.match(nameRegex))
  {
      inlineMsg('name','<strong>Error</strong><br />The name you entered is invalid.',2);
      return false;
  }
  
  if (email == "")
  {
      inlineMsg('email','<strong>Error</strong><br />You must enter your e-mail address.',2);
      return false;
  }
  if (!email.match(emailRegex))
  {
      inlineMsg('email','<strong>Error</strong><br />The e-mail address you entered is invalid.',2);
      return false;
  }

  if ((mobile == "") && (telephone == ""))
  {
      inlineMsg('telephone','<strong>Error</strong><br />You must enter either you mobile or your telephone number.',2);
      return false;
  }
  
  if ((telephone != "") && (!telephone.match(phoneRegex)))
  {
      inlineMsg('telephone','<strong>Error</strong><br />The telephone number you entered is invalid.',2);
      return false;
  }
  
  if ((mobile != "") && (!mobile.match(phoneRegex)))
  {
      inlineMsg('mobile','<strong>Error</strong><br />The mobile number you entered is invalid.',2);
      return false;
  }          
  
  if (monthsA == 0)
  {
      inlineMsg('monthsA','<strong>Error</strong><br />You must select a month of Arrival.',2);
      return false;
  }
  if (dayA == '')
  {
      inlineMsg('dayA','<strong>Error</strong><br />You must enter a day of Arrival.',2);
      return false;
  } else if (!dayA.match(dayRegex))
  {
      inlineMsg('dayA','<strong>Error</strong><br />You must enter a valid day of Arrival.',2);
      return false;
  } 
  if (yearA == '')
  {
      inlineMsg('yearA','<strong>Error</strong><br />You must enter a year of Arrival.',2);
      return false;
  } else if (!yearA.match(yearRegex))
  {
      inlineMsg('yearA','<strong>Error</strong><br />You must enter a valid year of Arrival.',2);
      return false;
  } 
  
  if (monthsD == 0)
  {
      inlineMsg('monthsD','<strong>Error</strong><br />You must select a month of Departure.',2);
      return false;
  }
  if (dayD == '')
  {
      inlineMsg('dayD','<strong>Error</strong><br />You must enter a day of Departure.',2);
      return false;
  } else if (!dayD.match(dayRegex))
  {
      inlineMsg('dayD','<strong>Error</strong><br />You must enter a valid day of Departure.',2);
      return false;
  } 
  if (yearD == '')
  {
      inlineMsg('yearD','<strong>Error</strong><br />You must enter a year of Departure.',2);
      return false;
  } else if (!yearD.match(yearRegex))
  {
      inlineMsg('yearD','<strong>Error</strong><br />You must enter a valid year of Departure.',2);
      return false;
  } 
  
  if (guests == '')
  {
      inlineMsg('guests','<strong>Error</strong><br />You must enter the number of guests.',2);
      return false;
  } else if (!guests.match(numberRegex))
  {
      inlineMsg('guests','<strong>Error</strong><br />You must enter a valid number of guests.',2);
      return false;
  }
  
  if (enquiry == "")
  {
      inlineMsg('enquiry','<strong>Error</strong><br />You must enter your message.',2);
      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 = "includes/images/msg_arrow.gif"; 
}