function openLesson(url){
	winLesson=window.open(url,'Video','width=530,height=560,status,scrollbars,resizable');
	winLesson.focus();
}
function openShock(url){
	winShck=window.open(url,'Shockwave','width=530,height=420,status,scrollbars');
	winShck.focus();
}
function openWsing(url){
	winWsing=window.open(url,'QandA','width=660,height=574,status,scrollbars');
	winWsing.focus();
}
function openSong(url){
	//winSong=window.open(url,'Video','width=500,height=450,status,scrollbars');
	winSong=window.open(url,'Video','width=530,height=460,status,scrollbars');
	winSong.focus();
}
function openSongSwf(url){
	winSong=window.open(url,'SongSwf','width=660,height=580,status');
	winSong.focus();
}
function openVideo(url){
	//winVideo=window.open(url,'Video','width=500,height=450,status,scrollbars');
	winVideo=window.open(url,'Video','width=530,height=460,status,scrollbars');
	winVideo.focus();
}
function openSoft(url){
	winSoft=window.open(url,'Soft','width=800,height=625,status');
	winSoft.focus();
}
function openTest(url){
	winTest=window.open(url,'Yamaha_grade','width=600,height=400,status');
	winTest.focus();
}
function openTyping(url){
	winTyping=window.open(url,'Soft','width=800,height=625,status');
	winTyping.focus();
}
function openMachine(url){
	winTyping=window.open(url,'Machine','width=512,height=380,status,scrollbars');
	winTyping.focus();
}
function openTkn(url){
	winTkn=window.open(url,'Taiken','width=520,height=295,status,scrollbars');
	winTkn.focus();
}
function openAdult(url){
	winAdult=window.open(url,'Adult','width=660,height=460,status,scrollbars');
	winAdult.focus();
}
function openFlash(url){
	winFlash=window.open(url,'Flashcard','width=655,height=545,status,scrollbars,resizable');
	winFlash.focus();
}
function openGrade(url){
	winGrade=window.open(url,'Grade','width=596,height=550,status,scrollbars');
	winGrade.focus();
}
function openIdxqa(url){
	winIdxqa=window.open(url,'QandA','width=512,height=500,status,scrollbars');
	winIdxqa.focus();
}