function adjustDiv(nr)
{
	if(document.getElementById("div_" + nr).style.display == "block")
	{
		document.getElementById("div_" + nr).style.display = "none";
		document.getElementById("img_" + nr).src = "media/images/icon_plus.gif";
	}
	else
	{
		document.getElementById("div_" + nr).style.display = "block";	
		document.getElementById("img_" + nr).src = "media/images/icon_minus.gif";
	}
}