var norm_image = '';

function mouseoverplz(element) {
	obj = $(element);
	norm_image = obj.src;
	if (obj.src.indexOf('_o') == -1) {
		file = obj.src.replace(/(\.gif|jpg|jpeg|png)/, '_o$1');
		obj.src = file;
	}
}

function mouseoutplz(element) {
	obj = $(element);
	obj.src = norm_image;
}