var currID = "timeline";

function showNext()
{
	var nextID = null;
	
	if ( currID == "timeline" )
		nextID = "trends";
	else if ( currID == "trends" )
		nextID = "search";
	else if ( currID == "search" )
		nextID = "messages";
	else if ( currID == "messages" )
		nextID = "details";
	else if ( currID == "details" )
		nextID = "profile";
	else if ( currID == "profile" )
		nextID = "compose";
	else if ( currID == "compose" )
		nextID = "timeline";

	show( nextID );
}

function show( divID )
{
	if ( divID != currID )
	{
		var x = document.getElementById( currID );
		x.style.display = "none";

		x = document.getElementById( divID );
		x.style.display = "block";
		
		x = document.getElementById( currID + "_dot" );
		x.src="images/EmptyDot.jpg";
		
		x = document.getElementById( divID + "_dot" );
		x.src = "images/SolidDot.jpg";
		
		currID = divID;
	}
}