function hasClass (obj, className) {
	if (typeof obj == 'undefined' || obj==null || !RegExp) { return false; }
	var re = new RegExp("(^|\\s)" + className + "(\\s|$)");
	if (typeof(obj)=="string") {
		return re.test(obj);
	}
	else if (typeof(obj)=="object" && obj.className) {
		return re.test(obj.className);
	}
	return false;
}

var myImages=document.getElementsByTagName('img');
for (i=0; i < myImages.length; i++)
{
	if (hasClass(myImages[i], "epi_air_logo_bw")) myImages[i].src="http://www.episports.com/includes/assets/epiair/epi_air_logo_bw.jpg";
	if (hasClass(myImages[i], "epi_man_bw")) myImages[i].src="http://www.episports.com/includes/assets/epiair/epi_man_bw.jpg";
}