function showPictureSelector(parentNodeID,returnField,previewDiv,ordnerID)
{
  if (document.getElementById('divPictureSelector'))
    parent.removeNode('divPictureSelector');
  else
  {	
    if (document.getElementById('divBlackscreen'))
	  showBlackscreen();
	  
    attachNode(parentNodeID,'div','divPictureSelector',false);
    getHTTPContent('/utilities/picture_selector/picture_selector.asp?ReturnField=' + returnField + '&PreviewDiv=' + previewDiv + '&OrdnerID=' + ordnerID,'divPictureSelector','');
  }
}


function closePictureSelector()
{
  if (document.getElementById('divBlackscreen'))
    hideBlackscreen();
	
  parent.removeNode('divPictureSelector');
}


function returnSelectedPicture(dateiID,returnField,previewDiv)
{
  showPicture(dateiID,previewDiv,true);
  document.getElementById(returnField).value = dateiID;
  closePictureSelector();
}