function flipCategory(CatID) {
	if (document.getElementById('chk' + CatID).checked) {
		document.getElementById('cat_' + CatID.toLowerCase()).style.display = 'block';
	} else {
		document.getElementById('cat_' + CatID.toLowerCase()).style.display = 'none';
	}
	
	cat_art
	cat_music
	cat_culture
	cat_traditions
	cat_values
	cat_family
	cat_education
	cat_social
}

function flipCategories() {
	
	document.getElementById('menu_intro_text').style.background = "url(images/menu_filters_back_on.gif)";	
	document.getElementById('menu_all_img').src = "images/menu_all_off.png";
	
	if (document.getElementById('chkArt').checked) {
		document.getElementById('cat_art').style.display = 'block';
	} else {
		document.getElementById('cat_art').style.display = 'none';
	}
	
	if (document.getElementById('chkMusic').checked) {
		document.getElementById('cat_music').style.display = 'block';
	} else {
		document.getElementById('cat_music').style.display = 'none';
	}
	
	if (document.getElementById('chkCulture').checked) {
		document.getElementById('cat_culture').style.display = 'block';
	} else {
		document.getElementById('cat_culture').style.display = 'none';
	}
	
	if (document.getElementById('chkTraditions').checked) {
		document.getElementById('cat_traditions').style.display = 'block';
	} else {
		document.getElementById('cat_traditions').style.display = 'none';
	}
	
	if (document.getElementById('chkValues').checked) {
		document.getElementById('cat_values').style.display = 'block';
	} else {
		document.getElementById('cat_values').style.display = 'none';
	}
	
	if (document.getElementById('chkFamily').checked) {
		document.getElementById('cat_family').style.display = 'block';
	} else {
		document.getElementById('cat_family').style.display = 'none';
	}
	
	if (document.getElementById('chkEducation').checked) {
		document.getElementById('cat_education').style.display = 'block';
	} else {
		document.getElementById('cat_education').style.display = 'none';
	}
	
	if (document.getElementById('chkSocial').checked) {
		document.getElementById('cat_social').style.display = 'block';
	} else {
		document.getElementById('cat_social').style.display = 'none';
	}
}