// JavaScript Document
var mein_fenster;
function openFenster(link,fenster,weite,hoehe)
  {
	if (!mein_fenster){
	mein_fenster = open(link,fenster,"width="+weite+",height="+hoehe+", resizable=yes,toolbar=no,scrollbars=yes, menubar=yes");  
	}
	else{
	mein_fenster.close();	
	mein_fenster = open(link,fenster,"width="+weite+",height="+hoehe+", resizable=yes,toolbar=no,scrollbars=yes, menubar=yes");  
	}
  }