@media only screen and (max-width: 800px) {
	.header {
		background:		url("/css/mlogo-utb-cs.png") no-repeat scroll left top transparent;
	}
}

@media only screen and (min-width: 801px) {
	.header {
		background:		url("/css/logo-utb-cs.png") no-repeat scroll left top transparent;
	}
}