function isOpera() {
	return navigator.userAgent.indexOf('Opera') != -1;
}

function isMSIE() {
	return navigator.userAgent.indexOf('MSIE') != -1;
}

function init() {
	//FIX icon flicker in IE6 -- but it could wreck Opera, so we validate this!
	try {
	  if(!isOpera()) document.execCommand('BackgroundImageCache', false, true);
	} catch(e) {}
}