$(document).ready(function(){
	$("#id_only_selected_1").attr("disabled","disabled");
	$("label:contains('selected')").css("color","#b9b8b8");
	$('.list input[type="checkbox"]').click(function(){
		if ($('.list input[type="checkbox"]:checked').length){
			$("#id_only_selected_1").removeAttr("disabled");
			$("label:has(#id_only_selected_1)").css("color","#000");
		} else {
			$("#id_only_selected_1").attr("disabled","disabled");
			$("label:has(#id_only_selected_1)").css("color","#b9b8b8");
		}
	});
});