function heslo(cesta,x,y) {
	rozmery = 'width='+x+',height='+y+',left=10,top=10,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no';
	window.open(cesta,'heslo',rozmery)
	}

function obrazek(cesta,x,y) {
	url=cesta;
	rozmery='width='+x+',height='+y+',left=10,top=10,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no';
	window.open('okno.htm','obr',rozmery);
}







function valid(form) {


if (form.name.value=="") {
alert("Fill-in your name please");
form.name.focus();
return false;
}


if (form.phone.value=="") {
alert("Fill-in your phone");
form.phone.focus();
return false;
}



if (form.email.value=="") {
alert("Fill-in your email please");
form.email.focus();
return false;
}


if (form.guests.value=="") {
alert("Fill-in number of guests please");
form.guests.focus();
return false;
}

return true;
}