function navigation() {
fen = window.open ("","popup","0,0,0,0,0,scrollbars=no,0,width=452,height=398");
if( self.focus ) fen.focus();
}

function navigation2() {
fen = window.open ("","popup2","0,0,0,0,0,scrollbars=no,0,width=340,height=510");
if( self.focus ) fen.focus();
}

function navigation3() {
fen = window.open ("","popup3","0,0,0,0,0,scrollbars=no,0,width=452,height=357");
if( self.focus ) fen.focus();
}