function validatesearch (form)
{
  if (form.keyword.value.length < 2)
  {
    alert('Je nutné zadat minimálně 2 znaky!');
    form.keyword.focus();
    return false;
  }
  else
    return true;
}

function ShowLoyaltyImage( param ) 
{
    var lwidth=640;
    var lheight=480;
    var openPar, win
     
    openPar='menubar=no,location=no,personalbar=no,titlebar=no,status=no,';
    openPar+='toolbar=no,directories=no,scrollbars=no,resizable=yes,';
    openPar+='top='+(screen.availHeight-lheight)/2+',left='+(screen.availWidth-lwidth)/2+',';
    openPar+='width='+lwidth+',height='+lheight;
    win=window.open( '<? echo ROOT_URL ?>show_image.php?dir=loyalty&id_image='+param, '', openPar );
    
} 

function ShowImage( param ) 
{
    var lwidth=640;
    var lheight=480;
    var openPar, win
     
    openPar='menubar=no,location=no,personalbar=no,titlebar=no,status=no,';
    openPar+='toolbar=no,directories=no,scrollbars=no,resizable=yes,';
    openPar+='top='+(screen.availHeight-lheight)/2+',left='+(screen.availWidth-lwidth)/2+',';
    openPar+='width='+lwidth+',height='+lheight;
    win=window.open( '<? echo ROOT_URL ?>show_image.php?id_image='+param, '', openPar );
    
}