function switchtabs(t_on,t_off,stopit) {

		document.getElementById('fc_' + t_on).className = "feature_content_on";
		document.getElementById('fs_'+ t_on).className = "feature_sub_on";

		offs = t_off.split(",");
		for (i = 0; i < offs.length; i++) {
			document.getElementById('fc_' + offs[i]).className = "feature_content_off";
			document.getElementById('fs_'+ offs[i]).className = "feature_sub_off";
		}
	}