function validateEmail(form)  {
  var mail = form.mmail.value;
  var mailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  
  if(mail == "") {
    inlineMsg('mmail','* Įveskite el. pašto adresą.',2);
    return false;
  }
  
  if(!mail.match(mailRegex)) {
     inlineMsg('mmail','* Neteisingai įvestas el. paštas.',2);
	 return false;
  }
  return true;
}

// form validation function //
function validate(form) {
	var email1 = form.email1.value;
	var email2 = form.email2.value;
	var rules = form.rules.checked;
	var left_qty =  parseInt(form.left.value);
	var qty =  parseInt(form.qty.value);
    var left_time = parseInt(form.left_time.value);
	//var p0 = form.payment[0].checked;
	//var p1 = form.payment[1].checked;
	//var p2 = form.payment[2].checked;
	//var p3 = form.payment[3].checked;
	//var p4 = form.payment[4].checked;
	//var p5 = form.payment[4].checked;
	//var p6 = form.payment[6].checked;
	//var p7 = form.payment[7].checked;
	//var p8 = form.payment[8].checked;
	//var p9 = form.payment[9].checked;
	

  var nameRegex = /^[a-zA-ZąĄčČęĘėĖįĮšŠųŲūŪžŽ]+$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var numericRegex = /^[0-9]+$/;
  
  if(left_time < 0) {
    inlineMsg('qty','* Akcijos laikas baigėsi.',2);
    return false;
 }
  
  if(left_qty < qty) {
    inlineMsg('qty','* Nepakankamas kuponų likutis arba visi kuponai jau parduoti.',2);
    return false;
 }
  
  if(email1 == "") {
    inlineMsg('email1','* Įveskite el. pašto adresą.',2);
    return false;
  }
  
  if(!email1.match(emailRegex)) {
    inlineMsg('email1','* Neteisingas el. paštas.',2);
    return false;
  }
  
  if(email2 == "") {
    inlineMsg('email2','* Pakartotinai įvesite el. pašto adresą.',2);
    return false;
  }
	
  if(!email2.match(emailRegex)) {
    inlineMsg('email2','* Suveskite vienodus el. pašto adresus.',2);
    return false;
  }

  if(email1 != email2) {
    inlineMsg('email2','* Suveskite vienodus el. pašto adresus.',2);
    return false;
  }
  if(rules == false) {
    inlineMsg('rules','* Susipažinkite su taisyklėmis.');
     return false;
  }
  //if(p0 ==false && p1==false && p2==false && p3==false && p4==false && p5==false && p6==false && p7==false && p8==false && p9==false) {
  //  inlineMsg('banking','* Pasirinkite banką, per kurį atliksite mokėjimą.');
  //  return false;
  //}
  
  return true;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 30;
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) + targetheight; //- ((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.png"; 
}