//center
function Wopen(url,w,h,n) {
	var winName = n;
	var Width   = 'width='   + w;
	var Height  = ',height=' + h;
	var Left    = ',left='   + ((screen.width - w) / 2);
	var Top     = ',top='    + ((screen.height- h) / 2);
	var Option = ',status=1,menubar=0,scrollbars=1,resizable=0';
	var features = Width + Height + Left + Top + Option;
	winName = window.open(url,winName,features);
	if (window.focus) {
		winName.focus();
	}
}

//折りたたみメニュー
function oritatami(id){
	obj=(document.all)?document.all(id):((document.getElementById)?document.getElementById(id):null);
	if(obj){
		obj.style.display=(obj.style.display=="none")?"block":"none";
	}
}