function sprawdz(pole,tresc)
{
	if(pole.value=="")
	{
		pole.value=tresc;
	}
}

function erese(obj)
{
	obj.value='';
}

function displayWindow(url, width, height) 
{
   	var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no' );
}

function adminwindow(url) 
{
   	var win = window.open(url,"adminwindow",'menubar=no,toolbar=yes,directories=no,status=no,scrollbars=yes,resizable=yes,fullscreen=yes,channelmode=no' );
}