if (navigator.appVersion.charAt(0) >= 3) {
	  window.onerror = null;
	  var img = new Array();
	  img[0] = new Image(); img[0].src = "../images/arrow_a.gif";
	  img[1] = new Image(); img[1].src = "../images/arrow_b.gif";
}

function _in(iName) {
	if (navigator.appVersion.charAt(0) >= 3) {
		document.images[iName].src = img[1].src;
	}
}

function _out(iName) {
	document.images[iName].src = img[0].src;
}