function openWindow(link) // inspired by porneL - http://pornel.net/pups/
{
  try
  {
    var new_window = window.open(link, '_blank');
    if(new_window) return false;
  }
  catch(e){}
  return true;
}

default_top = '';
last_clicked = '';

function setTopImage(img)
{
  if(img!=last_clicked)
  {
    if(!default_top) default_top = document.getElementById('headerLeft').innerHTML;
    last_clicked = img;
    document.getElementById('headerLeft').style.background = '';
    document.getElementById('headerLeft').innerHTML = '<img src="gfx/img/'+img+'" alt="" />';
  }
  else
  {
    document.getElementById('headerLeft').innerHTML = default_top;
    last_clicked = '';
  }
  return false;
}

function changeJah(zn){
  if(zn=='inny jacht'){
    document.getElementById('form1_center').style.display = 'block';
    document.getElementById('form1_p').style.display = 'block';
  }else{
    document.getElementById('form1_center').style.display = 'none';
    document.getElementById('form1_p').style.display = 'none';  
  }
}

function setTop360Image(img)
{
  document.getElementById('headerLeft').innerHTML =  '<div onmouseover="setScroll(1, 5);"></div>';
  document.getElementById('headerLeft').innerHTML += '<div onmouseover="setScroll(1, 2);"></div>';
  document.getElementById('headerLeft').innerHTML += '<div onmouseover="stopScroll();"></div>';
  document.getElementById('headerLeft').innerHTML += '<div onmouseover="setScroll(-1, 2);"></div>';
  document.getElementById('headerLeft').innerHTML += '<div onmouseover="setScroll(-1, 5);"></div>';
  document.getElementById('headerLeft').style.background = 'url(gfx/img/'+img+')';
  document.getElementById('headerLeft').style.backgroundPosition = '0px';
  return false;
}

var mx = 0;
var time = 0;
var direction = 1;
var speed = 1;

function setScroll(dir, sp)
{
  direction = dir;
  speed = sp;
  if(!time) scrollImage();
}

function scrollImage()
{
  if(direction>0) mx+=speed;
  else mx-=speed;
  document.getElementById('headerLeft').style.backgroundPosition = mx+'px';
  time = setTimeout('scrollImage()', 10);
}

function stopScroll()
{
  if(time)
  {
    clearTimeout(time);
    time = 0;
  }
}

function sprawdz(formeularz)
{
	for (i = 0; i < formularz.length; i++)
	{
		var pole = formularz.elements[i];
		if (!pole.disabled && !pole.readonly && (pole.type == "text" || pole.type == "password" || pole.type == "textarea") && pole.value == "")
		{
			alert("Proszę wypełnić wszystkie pola!");
			return false;
		}
	}
	return true;
}

function sprawdzadr(adres) {
     if (adres != "") {
          var re = new RegExp("[^@]{1,}[@]{1}[^@.]{1,}[.]{1}[^@]{1,}","gi");
          var wynik = re.test(adres);
          if (wynik == true) {
               return true;
          }
          if (wynik == false) {
               window.alert("Nieprawidlowy adres e-mail.");
               return false;
          }
     }else return false;
} 

/*
document.onmousemove=function(e)
{
  x=(e=e||event).clientX+(d=document.documentElement).scrollLeft;
  y=e.clientY+d.scrollTop;
  x1 = document.getElementById('headerLeft').offsetLeft;
  x2 = document.getElementById('headerLeft').offsetLeft + document.getElementById('headerLeft').offsetWidth;
  y1 = document.getElementById('headerLeft').offsetTop;
  y2 = document.getElementById('headerLeft').offsetTop + document.getElementById('headerLeft').offsetHeight;
  xc = (x2+x1)/2;
  if(x<xc) direction = 1;
  else direction = -1;
  if(x>xc) timeOffset = 0.1 * (280-(x-xc));
  else if(x<xc) timeOffset = 0.1 * (280-(xc-x));
  else stopScroll();
//  document.getElementById('headerRight').innerHTML = '['+timeOffset+']';
  if(y>y1 && y<y2 && x>x1 && x<x2 && !time) scrollImage();
  else stopScroll();
}
*/