var openedMenu = null;
var submenuTimer;

//画像メニューにポインタがきた時
function menuOvr(id){

	// 開いているメニューと違うメニューであれば隠す。
	if (openedMenu && openedMenu != id){
		CloseMenu(id);
	}

        document.m1.src = 'images/top/menu01a.gif';

	// サブウィンドウの表示
	OpenMenu(id);
}

//レイヤメニューの表示
function OpenMenu(id){ 

	if ( document.getElementById ){
		document.getElementById( id ).style.visibility = 'visible';
	}else if ( document.all ){
		document.all( id ).style.visibility = 'visible';
	}else if ( document.layers ){
		document.layers[ id ].visibility = 'show';
	}

	clearTimeout(submenuTimer);

	openedMenu = id;

}

//レイヤメニューの削除
function CloseMenu(){ 

	if ( document.getElementById ){
		document.getElementById( openedMenu ).style.visibility = 'hidden';
	}else if ( document.all ){
		document.all( openedMenu ).style.visibility = 'hidden';
	}else if ( document.layers ){
		document.layers[ openedMenu ].visibility = 'hide';
	}
        document.m1.src = 'images/top/menu01.gif';

	openedMenu = null;

}

function DblChg(FrNm1,Url1,FrNm2,Url2){
	window.open(Url1,FrNm1);
	window.open(Url2,FrNm2);
}

//document.onclick = CloseMenu; 


document.write("<DIV id='menu1' style='position:absolute;top : 175px;left :160px;visibility:hidden; z-index : 3;  background-color : #ffffff;' onmouseout='submenuTimer = setTimeout(\"CloseMenu()\", 700);' onmouseover='clearTimeout(submenuTimer);'><TABLE border='0' cellpadding='0' cellspacing='0'><TBODY><TR><TD><A href='about/consortium.html' target='_top'><IMG src='images/top/menu01_1.gif' width='160' height='27' border='0' onmouseover='RollOver(this,\"images/top/menu01_1a.gif\");' onmouseout='RollOver(this, \"images/top/menu01_1.gif\");'></A></TD></TR><TR><TD><A href='about/aims.html' target='_top'><IMG src='images/top/menu01_2.gif' width='160' height='27' border='0' onmouseover='RollOver(this,\"images/top/menu01_2a.gif\");' onmouseout='RollOver(this, \"images/top/menu01_2.gif\");'></A></TD></TR><TR><TD><A href='about/projects.html' target='_top'><IMG src='images/top/menu01_3.gif' width='160' height='27' border='0' onmouseover='RollOver(this,\"images/top/menu01_3a.gif\");' onmouseout='RollOver(this, \"images/top/menu01_3.gif\");'></A></TD></TR><TR><TD><A href='about/member.html' target='_top'><IMG src='images/top/menu01_4.gif' width='160' height='27' border='0' onmouseover='RollOver(this,\"images/top/menu01_4a.gif\");' onmouseout='RollOver(this, \"images/top/menu01_4.gif\");'></A></TD></TR></TBODY></TABLE></DIV>");



function RollOver (obj,val) {
  obj.src = val;
}