// form validation function //


function validate(form) {


	//znaki


  var imie_nazwisko = form.imie_nazwisko.value;


  var email = form.email.value;


  var telefon = form.telefon.value;	


  var wiadomosc = form.wiadomosc.value;		





  var imie_nazwiskoRegex = /^[A-Ża-ż]+(([\'\,\.\- ][A-Ża-ż])?[A-Ża-ż]*)*$/;


  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;	


  var telefonRegex = /^\s*\d+\s*$/;	


		





  


	if(imie_nazwisko == "") {


    inlineMsg('imie_nazwisko','Nie podałeś imienia.',2);


    return false;


  }


	


  if(!imie_nazwisko.match(imie_nazwiskoRegex)) {


    inlineMsg('imie_nazwisko','Wprowadziłeś niepoprawną wartość.',2);


    return false;


  }


 	


   if(email == "") {	


    inlineMsg('email','Nie podałeś adresu email.',2);


    return false;


  }


  if(!email.match(emailRegex)) {


    inlineMsg('email','Wprowadz poprawny adres email.',2);


    return false;


  }


	


  	if(wiadomosc == "") {	


    inlineMsg('wiadomosc','Nie podałeś treści wiadomości.',2);


    return false;


  }


	


  return true;


	


}





// START OF dom 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 dom 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"; 


}