$(function () {
	$("form#dotaz input[type=text], form#dotaz textarea").keyup(function() {
		var submit = $("form#dotaz input[type=submit]");
		
		submit.removeAttr("disabled");
		
		$("form#dotaz input[name=jmeno], form#dotaz input[name=mail], form#dotaz textarea").each(function(i) {
			if ($(this).val() == "") {
				submit.attr("disabled", true);
			}
		});
	});
});