var path = 'images/navi/';

function iOn(name) {
	img = eval('document.' + name);
	img.src = path + name + '_a.gif';
}

function iOut(name) {
	img = eval('document.' + name);
	img.src = path + name + '.gif';
}

function popUp(sURL,winSizeW,winSizeH) {
	var features = "width="+winSizeW+",height="+winSizeH+",left="+((screen.width-winSizeW)/2)+",top="+((screen.height-winSizeH-50)/2);
	popUpWin = window.open(sURL+'.html', 'popUp'+winSizeW+winSizeH, features);
	popUpWin.focus();
}