var popup_win=null;

function absatz(n)
{
  CheckOpen();
  popup_win=window.open("absatz"+n+".htm", "mehr","resizable=no,scrollbars=no,menubar=no,toolbar=no,hotkeys=no,width=600,height=300,top=0,left=0");
  popup_win.window.focus();
}

function showBon() {    
  CheckOpen();
  popup_win=window.open("htm/gutschein.htm","","resizable=no,scrollbars=no,menubar=no,toolbar=no,hotkeys=no,width=600,height=300,top=0,left=0");
  popup_win.focus();
}

function erklaerung(n) {    
  CheckOpen();
  popup_win=window.open("absatz"+n+".htm", "mehr","resizable=no,scrollbars=yes,menubar=no,toolbar=no,hotkeys=no,width=600,height=300,top=0,left=0");
  popup_win.focus();
}

function details(n) {    
  CheckOpen();
  popup_win=window.open("detail"+n+".htm", "mehr","resizable=no,scrollbars=yes,menubar=no,toolbar=no,hotkeys=no,width=600,height=300,top=0,left=0");
  popup_win.focus();
}

function CheckOpen() 
{
 if(popup_win && popup_win.closed != true) popup_win.window.close();
}