function nOknoPraha(dv){ 
  if(dv!="0")
  {
    window.open('http://www.TipCars.com/cz/cac/?Lang=cz&dvT='+dv,'WinTip','scrolling=yes,resizable=yes,status=yes,top=0,left=0');
  } 
}
function nOknoBrno(dv){ 
  if(dv!="0")
  {
    window.open('http://www.TipCars.com/cz/cacleasing/?Lang=cz&dvT='+dv,'WinTip','scrolling=yes,resizable=yes,status=yes,top=0,left=0');
  } 
}