function czyPusta(wartosc) {
        if (wartosc=="") {
                return false;
        }
        return true;
}

function poprawnyAdres(emailAdr) {
        zleZnaki = " /:,;"
        if (emailAdr == "") {
                return false
        }
        for (i=0; i<zleZnaki.leght; i++) {
                zlyZnak=zleZnaki.charAt(i)
                if (emailAdr.indexOf(zlyZnak,0) != -1) {
                        return false
                }
        }
        malpaPoz=emailAdr.indexOf("@",0)
        if (malpaPoz == -1 || malpaPoz == 0) {
                return false
        }
        if (emailAdr.indexOf("@",malpaPoz+1) != -1) {
                return false
        }
        kropkaPoz = emailAdr.indexOf(".",malpaPoz)
        if (kropkaPoz == -1 || kropkaPoz == malpaPoz+1) {
                return false
        }
        if (kropkaPoz+3 > emailAdr.length) {
                return false
        }
        return true;
}


function wyslijDane_rejestracja(form) {
        if (!poprawnyAdres(form.szEmail.value)) {
               alert("Musisz wpisać poprawny adres e-mail");
               form.szEmail.focus();
               form.szEmail.select();
               return false;
        }    
}

function openPictureWindow_Fever(imageName,alt) {
	newWindow = window.open("","okno","width=40,height=20,left=0,top=0,scrollbars=no");
	newWindow.document.location = 'photo.php?imageLevel=0&imageAlt=0&wallpaper='+0+'&imageName='+imageName+'&imageAlt='+alt;
	newWindow.focus();
}

function openWallpaperWindow_Fever(imageName,alt) {
	newWindow = window.open("","okno","width=40,height=20,left=0,top=0,scrollbars=no");
	newWindow.document.location = 'photo.php?imageLevel=0&imageAlt=0&wallpaper=1&imageName='+imageName+'&imageAlt='+alt;
	newWindow.focus();
}

function okno(lc){
	newWindow = window.open("","okno","width=400,height=300,left=0,top=0,scrollbars=no");
	newWindow.document.location = lc;
	newWindow.focus();

}