function PageBack(){
  history.back();
}

function wopen1(){
	window.open("chigai.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=490,height=380")
}

function wopen2(){
	window.open("fw_all.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=600,height=450")
}

function wopen3(){
	window.open("fw_fromtitle.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=600,height=450")
}

function wopen4(){
	window.open("announce/an030206.html","window4","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=680,height=400")
}


function wopen5(){
	window.open("an030206.html","window4","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=680,height=400")
}


function wopen6(){
	window.open("fl_cam_hikaku.html","window4","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=680,height=650")
}


function wopen10(){
	window.open("fw_all_mbb.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=600,height=450")
}


function wopen11(){
	window.open("fw_fromtitle_mbb.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=600,height=450")
}


function Jump() {
  tu = document.f.elements['jumpto'].options[document.f.elements['jumpto'].selectedIndex].value
  if( tu != '-' ) {
    location.href = tu;
  }
  else {
    alert('移動先を選択して下さい。');
  }
}