function clearViewState()
{
	var viewState;
	for (i = 0; i < document.forms.length; i++)
	{
		viewState = document.forms[i].__VIEWSTATE;
		if (viewState != null)
		{
			viewState.name = "__VIEWSTATE_Disabled";
			viewState.value = "";
		}
	}
}

function SendRequest(action)
{
	var obj = document.forms[0];
	obj.action = "http://feed.ne.cision.com/client/sigma/sharesubscription/ActivateShareSubscription.aspx";
	obj.elements['wpyaction'].value = action;
	clearViewState();
	obj.submit();
}

function Unsubscribe()
{
	SendRequest('unsubscribe');
}

function Subscribe()
{
	SendRequest('subscribe');
}