function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function openWindow(url, width, height, slide, foot) {
  if (!slide) slide = 'yes';
  if (!foot) foot = 'no';
  if (!width) width = 770;
  if (!height) height = 550;
  var left = (screen.width-width)/2;
  var top = (screen.height-height)/2 - 35;
  //var left = 10;
  //var top = 10;
  window.open(url,"okno",'width='+ width +',height='+ height +',resizable=yes,scrollbars='+ slide + ',menubar=no,status='+foot+',top='+top+',left='+left+'');
}

function zoom(url) {
  var top = 10;	
  var left = (screen.width)/2 - 320;
  window.open(url,'ImageWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=100,height=100,screenX=10,screenY=10,top='+top+',left='+left+'')
}

function check_form() {
  var error = 0;
  var error_message = "Popraw dane w formularzu\n\n";
  var f_realname = document.f.realname.value;
  var f_city = document.f.city.value;
  var f_phone = document.f.phone.value;
  var f_email = document.f.email.value;
  if (!f_realname) {
    error_message = error_message + "* Musisz wpełnić pole Imię i nazwisko\n";
    error = 1;
  }
/*
  if (!f_city) {
    error_message = error_message + "* Wypełnij pole miejscowość\n";
    error = 1;
  }
  if (!f_phone) {
    error_message = error_message + "* Podaj numer telefonu.\n";
    error = 1;
  }
*/
  if (f_email) {
    if (f_email == "" || f_email.length < 6) {
      error_message = error_message + "* Adres E-mail  musi miec przynajmniej 6 zn.\n";
    }	    
    if (f_email.indexOf("@") == -1 || f_email.indexOf(".") == -1) {
      error_message = error_message + "* Adres E-mail nie jest poprawny.\n"; 
      error = 1;
    }
  }
  if (error == 1) {
    alert(error_message);
    return false;
  } 
  else {
    return true;
  }
}