function warnMessage(sender)
{
	if (false==window.warningMessageEnabled || undefined == window.warningMessageEnabled)
	{
		return true;
	}

	window.sender = sender;
	var warningMessage = document.getElementById("back_step_warning");
	warningMessage.style.display = "block";
	return false;
}

function onConfirm(confirmation)
{
	if (!window.warningMessageEnabled && undefined != window.warningMessageEnabled)
	{
		return;
	}
	
	document.getElementById('back_step_warning').style.display = 'none';
	if (confirmation) 
	{
		if (window.sender.elementId)
		{
			var iframe = document.getElementById(window.sender.elementId);
			iframe.src = window.sender.href;
			return;
		}
		document.location.href = window.sender.href;
	}
}