@media screen and (min-width:580px) {
	#tab_left {
		float:left;
		width:72%;
	}

	#tab_right {
		float:right;
		padding-top:10px;
		width:28%;
	}
}

@media screen and (max-width:580px) {
	#tab_left {
		width:100%;
	}

	#tab_right {
		display:none;
	}
}