function SetDartOver(id) { 
	var div = document.getElementById(id); 
	if (div != null)
	{
		div.src = 'assets/images/dart.gif'
	}
}

function SetDartOut(id) { 
	var div = document.getElementById(id); 
	if (div != null)
	{
		div.src = 'assets/images/dart_grey.gif'
	}
}