// neues browserfenster mit fester größe (immer das selbe fenster bei undefiniertem Namen!!)
	function popup( myfile){
	    winname = "PopUp";
	    params = "width=700,height=500,resizable=0,status=0,toolbar=0,location=0,directories=0,menubar=0,scrollbars=1";
	    newwin = window.open( myfile, winname , params);
	    if (window.focus) newwin.focus();
	}
	
	
	function popup_klein( myfile){
	    winname = "PopUp";
	    params = "left=200,top=200,width=350,height=200,resizable=0,status=0,toolbar=0,location=0,directories=0,menubar=0,scrollbars=0";
	    newwin = window.open( myfile, winname , params);
	    if (window.focus) newwin.focus();
	}
	
	
	function ext_popup( myfile, width, height){
	    winname = "PopUp";
	    params = "width="+width+",height="+height+",resizable=1,status=0,toolbar=0,location=0,directories=0,menubar=0,scrollbars=1";
	    newwin = window.open( myfile, winname , params);
	    if (window.focus) newwin.focus();
	}