function wlacz_menu_0() {
	document.getElementById('menu_0').className = 'kat_on';
	document.getElementById('nag_0').className = 'glowna_on';
}

function wlacz_menu_1() {
	document.getElementById('menu_1').className = 'kat_on';
	document.getElementById('nag_1').className = 'oferta_on';
}
function wlacz_menu_2() {
	document.getElementById('menu_2').className = 'kat_on';
	document.getElementById('nag_2').className = 'dlaczego_on';
}
function wlacz_menu_3() {
	document.getElementById('menu_3').className = 'kat_on';
	document.getElementById('nag_3').className = 'resume_on';
}

function wylacz_menu_0() {
	document.getElementById('menu_0').className = 'kat_off';
	document.getElementById('nag_0').className = 'glowna_off';
}

function wylacz_menu_1() {
	document.getElementById('menu_1').className = 'kat_off';
	document.getElementById('nag_1').className = 'oferta_off';
}

function wylacz_menu_2() {
	document.getElementById('menu_2').className = 'kat_off';
	document.getElementById('nag_2').className = 'dlaczego_off';
}

function wylacz_menu_3() {
	document.getElementById('menu_3').className = 'kat_off';
	document.getElementById('nag_3').className = 'resume_off';
}

function wlacz_menu_4() {
	document.getElementById('menu_4').className = 'kat_on';
	document.getElementById('nag_4').className = 'home_on';
}

function wlacz_menu_5() {
	document.getElementById('menu_5').className = 'kat_on';
	document.getElementById('nag_5').className = 'cooperation_on';
}
function wlacz_menu_6() {
	document.getElementById('menu_6').className = 'kat_on';
	document.getElementById('nag_6').className = 'credentials_on';
}
function wlacz_menu_7() {
	document.getElementById('menu_7').className = 'kat_on';
	document.getElementById('nag_7').className = 'resume_on';
}

function wylacz_menu_4() {
	document.getElementById('menu_4').className = 'kat_off';
	document.getElementById('nag_4').className = 'home_off';
}

function wylacz_menu_5() {
	document.getElementById('menu_5').className = 'kat_off';
	document.getElementById('nag_5').className = 'cooperation_off';
}

function wylacz_menu_6() {
	document.getElementById('menu_6').className = 'kat_off';
	document.getElementById('nag_6').className = 'credentials_off';
}

function wylacz_menu_7() {
	document.getElementById('menu_7').className = 'kat_off';
	document.getElementById('nag_7').className = 'resume_off';
}