function marker(b)
{
	if (b==1)
	{
		document.getElementById('marker').style.marginLeft = '-4px';
		document.getElementById('marker').style.backgroundImage = 'url(img/marker_l.gif)';
		document.getElementById('content_header').style.backgroundImage = 'url(img/cont_header_l.gif)';
		document.getElementById('marker').style.display = 'block';
	}
	
	if (b==2)
	{
		document.getElementById('marker').style.marginLeft = '175px';
		document.getElementById('marker').style.backgroundImage = 'url(img/marker.gif)';
		document.getElementById('content_header').style.backgroundImage = 'url(img/cont_header.gif)';
		document.getElementById('marker').style.display = 'block';
	}
	
	if (b==3)
	{
		document.getElementById('marker').style.marginLeft = '353px';
		document.getElementById('marker').style.backgroundImage = 'url(img/marker.gif)';
		document.getElementById('content_header').style.backgroundImage = 'url(img/cont_header.gif)';
		document.getElementById('marker').style.display = 'block';
	}
	
	if (b==4)
	{
		document.getElementById('marker').style.marginLeft = '532px';
		document.getElementById('marker').style.backgroundImage = 'url(img/marker_r.gif)';
		document.getElementById('content_header').style.backgroundImage = 'url(img/cont_header_r.gif)';
		document.getElementById('marker').style.display = 'block';
	}
}

function resets()
{

		document.getElementById('marker').style.display = 'none';
		document.getElementById('content_header').style.backgroundImage = 'url(img/cont_header.gif)';
}