function blocking(nr)
{

	if (document.layers)
	{
		current = (document.layers[nr].display == 'none') ? 'block' : 'none';
		document.layers[nr].display = current;
	}
	else if (document.all)
	{
		current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
		document.all[nr].style.display = current;
	}
	else if (document.getElementById)
	{
		vista = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
		document.getElementById(nr).style.display = vista;
	}
}
function swapButton(button1)
{
	
	
	if ( document.images[button1].src == "/images/arrowDWN.gif" )
	{
		document.images[button1].src = "/images/arrowUP.gif" ;
	} 
	else 
	{
		//alert("2")
		document.images[button1].src = "/images/arrowDWN.gif" ;
	}

}