function OpenURL(URL_in){
//Eingangsdaten
var URL = '';

if (URL_in != ''){
  URL = URL_in;
}
else{
  URL = 'http://www.trial-shows.de'
}
//Seite schreiben
var win=window.open(URL, "NewWindow", "location=yes, hotkeys=yes, directories=yes, menubar=yes, scrollbar=yes, toolbar=yes, status=yes");
}