function hideNEWS() {
var NEWS = document.getElementById("ArtworkMenu")
var ART = document.getElementById("News")
var HEAD = document.getElementById("ArtworkHeader")
HEAD.className="artON"
NEWS.className="hidden"
ART.className="visible"

}

function hideART() {
var NEWS = document.getElementById("ArtworkMenu")
var ART = document.getElementById("News")
var HEAD = document.getElementById("ArtworkHeader")
HEAD.className="newsON"
NEWS.className="visible"
ART.className="hidden"

}

/* CHANGE ARTWORK MARK */

function changeclassArtBio() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artbio"
}

function changeclassArtDisko() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artdisko"
}

function changeclassArtProgram() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artprogram"
}

function changeclassArtKoncerty() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artkoncerty"
}

function changeclassArtFoto() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artfoto"
}

function changeclassArtSpolu() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artspolu"
}

function changeclassArtKrity() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artkrity"
}

function changeclassArtKontakt() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Artkontakt"
}

function changeclassArtHome() {
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="Arthome"
}

/* CHANGE MENU */

function changeclassBio() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="bio"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="bio"
SIDEBAR.className="bio"
/*artBG.className="bio"*/
}

function changeclassDisko() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="disko"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="disko"
SIDEBAR.className="disko"
/*artBG.className="disko"*/
}

function changeclassProgram() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="program"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="program"
SIDEBAR.className="program"
/*artBG.className="program"*/
}
function changeclassKoncerty() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="koncerty"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="koncerty"
SIDEBAR.className="koncerty"
/*artBG.className="koncerty"*/
}

function changeclassFoto() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="foto"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="foto"
SIDEBAR.className="foto"
/*artBG.className="foto"*/
}

function changeclassSpolu() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="spolu"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="spolu"
SIDEBAR.className="spolu"
/*artBG.className="spolu"*/
}

function changeclassKrity() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="krity"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="krity"
SIDEBAR.className="krity"
/*artBG.className="krity"*/
}

function changeclassKontakt() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="kontakt"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="kontakt"
SIDEBAR.className="kontakt"
/*artBG.className="kontakt"*/
}

function changeclassHome() {
var MENU = document.getElementById("Menu")
var SIDEBAR = document.getElementById("SideBar")
var ARTWORK = document.getElementById("ArtworkNavigation")
ARTWORK.className="home"
/*var artBG = document.getElementById("ArtworkBg")*/
MENU.className="home"
SIDEBAR.className="home"
/*artBG.className="home"*/
}

function changeclassVisibilityOff() {
var VISIABILITY = document.getElementById("VisibilityOption")
VISIABILITY.className="hidden"
}

function changeclassVisibilityOn() {
var VISIABILITY = document.getElementById("VisibilityOption")
VISIABILITY.className="visible"
}