function show_container(type) {
	if(type == 'content'){
		if(document.getElementById('container').style.height == '255px'){
			document.getElementById('container').style.height = 'auto';
			document.getElementById('expand').style.marginTop = parseInt(document.getElementById('container').offsetHeight) - 280 + 'px';
		}
		else{
			document.getElementById('container').style.height = '255px';
			document.getElementById('expand').style.marginTop = 0;
		}
	}
	else if(type == 'exhibit'){
			if(document.getElementById('container_exhibit').style.height == '225px'){
				document.getElementById('container_exhibit').style.height = 'auto';
				document.getElementById('expand_exhibit').style.marginTop = parseInt(document.getElementById('container_exhibit').offsetHeight) - 250 + 'px';
			}
			else{
				document.getElementById('container_exhibit').style.height = '225px';
				document.getElementById('expand_exhibit').style.marginTop = 0;
			}
		}
		else if(type == 'photos'){
				if(document.getElementById('container_photos').style.height == '165px'){
					document.getElementById('container_photos').style.height = 'auto';
					document.getElementById('expand_photos').style.marginTop = parseInt(document.getElementById('container_photos').offsetHeight) - 191 + 'px';
				}
				else{
					document.getElementById('container_photos').style.height = '165px';
					document.getElementById('expand_photos').style.marginTop = 0;
				}
			}
			else if(type == 'ex_photos'){
					if(document.getElementById('ph').style.height == '325px'){
						document.getElementById('ph').style.height = 'auto';
						document.getElementById('expand_photos').style.marginTop = parseInt(document.getElementById('ph').offsetHeight) - 347 + 'px';
					}
					else{
						document.getElementById('ph').style.height = '325px';
						document.getElementById('expand_photos').style.marginTop = 0;
					}
				}
}
function show_submenu(item) {
	document.getElementById("submenu_" + item).style.display = '';
	if(item == 'info')
		document.getElementById("submenu_exhibits").style.display = 'none';
	if(item == 'exhibits')
		document.getElementById("submenu_info").style.display = 'none';
}

function change_link(i) {
	document.getElementById("ex_link_off_" + i).style.display = 'none';
	document.getElementById("ex_link_on_" + i).style.display = '';
}

function unchange_link(i) {
	document.getElementById("ex_link_off_" + i).style.display = '';
	document.getElementById("ex_link_on_" + i).style.display = 'none';
}

function show_video() {
	document.getElementById("home_no_video").style.display = 'none';
	document.getElementById("home_video").style.display = '';
}

function hide_video() {
	document.getElementById("home_no_video").style.display = '';
	document.getElementById("home_video").style.display = 'none';
}

function show_artist_logo(id, nr) {
	for(var i=0; i < nr; i++){
		document.getElementById('art_' + i).style.display = 'none';
		document.getElementById('link_' + i).className = 'artist';
	}
	document.getElementById(id).style.display = 'block';
	
	this.className="artist art_selected";
	
}

function hide_artist_logo(id) {
	document.getElementById(id).style.display = 'none';
}

function center(){
	var d = document.getElementById('my-glider');
	if(d){
		var x = 0; var y = 0;
		var aa=d.getElementsByTagName('img');
		for(id=0; id < aa.length; id++)
			if(aa[id].className != 'photo_current_exhibition'){
				x = parseInt(aa[id].offsetWidth / 2);
				y = parseInt(aa[id].offsetHeight / 2);
	
				if(aa[id].offsetHeight < 333){aa[id].style.top = "50%"; aa[id].style.marginTop = "-" + parseInt(aa[id].offsetHeight / 2) + "px";}
				else{aa[id].style.top = "0"; aa[id].marginTop = "0"; }
	
				if(aa[id].offsetWidth < 418){aa[id].style.left = "50%"; aa[id].style.marginLeft = "-" + x + "px";}
				else{aa[id].style.left = "0"; aa[id].style.marginLeft = "0";}
			}
	}
}

function show_pub(id) {
	//document.getElementById('pub_all').style.display = "none";
	document.getElementById('pub_books').style.display = "none";
	document.getElementById('pub_dvds').style.display = "none";
	document.getElementById(id).style.display = "block";
	//document.getElementById('pub_all_menu').className = "";
	document.getElementById('pub_books_menu').className = "";
	document.getElementById('pub_dvds_menu').className = "";
	document.getElementById(id+'_menu').className = "selected";
}

function show_all() {
	if(document.getElementById("all").style.display == 'none')
		document.getElementById("all").style.display = 'block';
	else
		document.getElementById("all").style.display = 'none';
}
function go_url(url) {
	if(url!="") window.location.href = url;
}