var currentTab = 0;

function switchTab( tab ) {
	if( currentTab ) {
		document.getElementById('tab_' + currentTab).style.fontWeight = "normal";
		document.getElementById('c_tab_' + currentTab).style.display = "none";
	}
	
	document.getElementById('tab_' + tab).style.fontWeight = "bold";
	document.getElementById('c_tab_' + tab).style.display = "block";
	
	currentTab = tab;
}

function clearArtist() {
	document.getElementById('atab_bio').style.color = "#111";
	document.getElementById('atab_disco').style.color = "#111";
	document.getElementById('atab_photos').style.color = "#111";
	document.getElementById('atab_videos').style.color = "#111";
	document.getElementById('tabbio').style.display = "none";
	document.getElementById('tabdisco').style.display = "none";
	document.getElementById('tabphotos').style.display = "none";
	document.getElementById('tabvideos').style.display = "none";
}

function switchBio() {
	clearArtist();
	document.getElementById('atab_bio').style.color = "#cccccc";
	document.getElementById('tabbio').style.display = "block";
}

function switchDisco() {
	clearArtist();
	document.getElementById('atab_disco').style.color = "#cccccc";
	document.getElementById('tabdisco').style.display = "block";
}

function switchPhotos() {
	clearArtist();
	document.getElementById('atab_photos').style.color = "#cccccc";
	document.getElementById('tabphotos').style.display = "block";
}

function switchVideos() {
	clearArtist();
	document.getElementById('atab_videos').style.color = "#cccccc";
	document.getElementById('tabvideos').style.display = "block";
}