function shiftCampaigns(direction)
{

	if(direction == 'right' && headerCampaigns.length > currentHeaderCampaign+4)
	{
		document.getElementById('c1').innerHTML = headerCampaigns[currentHeaderCampaign+1];
		document.getElementById('c2').innerHTML = headerCampaigns[currentHeaderCampaign+2];
		document.getElementById('c3').innerHTML = headerCampaigns[currentHeaderCampaign+3];
		document.getElementById('c4').innerHTML = headerCampaigns[currentHeaderCampaign+4];
		currentHeaderCampaign++;
	}
	
	if(direction == 'left' && currentHeaderCampaign > 0)
	{
		currentHeaderCampaign--;
		document.getElementById('c1').innerHTML = headerCampaigns[currentHeaderCampaign];
		document.getElementById('c2').innerHTML = headerCampaigns[currentHeaderCampaign+1];
		document.getElementById('c3').innerHTML = headerCampaigns[currentHeaderCampaign+2];
		document.getElementById('c4').innerHTML = headerCampaigns[currentHeaderCampaign+3];
		
	}

}