var current_page = 1;
    
function nextPage()
{
	hidePages();
	current_page = current_page + 1;
	if (current_page == 5)
	{
		document.getElementById("next_button").style.display = "none";
	}
	if (current_page == 6)
	{
	    current_page = 5;
	}
	
    document.getElementById("prev_button").style.display = "inline";
	showPage(current_page);
}
    
function prevPage()
{
	hidePages();
	if (current_page != 1)
	    current_page = current_page - 1;
	if (current_page == 1)
		document.getElementById("prev_button").style.display = "none";
	document.getElementById("next_button").style.display = "inline";
	showPage(current_page);
}

function hidePages()
{
	for (i = 1; i <= 5; i++)
	{
		if (document.getElementById('page_' + i))
			document.getElementById('page_' + i).style.display = 'none';
	}
}
    
function showPage(id)
{
	document.getElementById('page_' + id).style.display = 'block';
}

function update() 
{
  $.get("nextsong.php", function(data) {
	songs = data.split("\n"); 
//	$("#current_artist").html(songs[0]);
//	$("#current_title").html(songs[1]);
//	$("#next_artist").html(songs[2]);
//	$("#next_title").html(songs[3]);
	document.getElementById("current_artist").innerHTML = songs[0];
	document.getElementById("current_title").innerHTML = songs[1];
	document.getElementById("next_artist").innerHTML = songs[2];
	document.getElementById("next_title").innerHTML = songs[3];
    });
    window.setTimeout(update, 15000);
}

function changeMenu(item)
{
/*	document.body.style.cursor = 'wait'; */
	$.get("changemenu.php?item=" + item, function(data) {
		document.getElementById("content").innerHTML = data;
/*		document.body.style.cursor = 'pointer'; */
	});
}

window.setTimeout(update, 700);