function checkCommentForm(f) {
	if (f.author && !f.author.value || f.email && !f.email.value || f.comment && !f.comment.value) {
		alert("Täytä kaikki pakolliset tiedot, kiitos");
		return false;
	}

	return true;
}


$(document).ready(
	function() {
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		$('div.button').hover(
			function() {
				$(this).children('div.button_left').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_left-over.png")');
				$(this).children('div.button_middle').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_middle-over.png")');
				$(this).children('div.button_right').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_right-over.png")');
			},
			function() {
				$(this).children('div.button_left').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_left.png")');
				$(this).children('div.button_middle').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_middle.png")');
				$(this).children('div.button_right').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_right.png")');
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		// Button down
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				$(this).children('div.button_middle').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_middle-down.png")');
				$(this).children('div.button_right').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_right-down.png")');
			}
		);

		// Button up
		$('div.button').mouseup(
			function() {
				$(this).children('div.button_left').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_left-over.png")');
				$(this).children('div.button_middle').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_middle-over.png")');
				$(this).children('div.button_right').css('background-image', 'url("/blogi/wp-content/themes/ohjkurssit/img/button_basic_right-over.png")');
			}
		);
	}
);