function vcard (Person) {

  xsize = 610; 					/* Breite des Fensters */
  ysize = 430; 					/* Hoehe des Fensters */

  if (navigator.appName == "Microsoft Internet Explorer") {
	xsize=650;
	ysize = 480;
  }

 url = "http://www.fhoev-rlp.de/vcard/vcard.php";
 /* url = "http://www.t3umzug.fhoev.de/vcard/vcard.php"; */
  
  ScreenWidth = screen.width;
  ScreenHeight = screen.height;
  
  xpos = (ScreenWidth/2)-(xsize/2);		/* x-Position */
  ypos = (ScreenHeight/2)-(ysize/2);		/* y-Position */
  
win_parm = "width="+xsize + ",height="+ ysize+",left="+xpos+",top="+ypos+",status=yes, scrollbars=yes, resizable=yes"; 


 fenster = window.open(url + "?id=" + Person ,"_blank", win_parm );
 fenster.focus();
}