function toggle(whichId)
{
	if (document.getElementById)
	{
		// standard bowser
		var style2 = document.getElementById(whichId).style;
		style2.display = style2.display? "":"block";
	}
	else if (document.all)
	{
		// old msie
		var style2 = document.all[whichId].style;
		style2.display = style2.display? "":"block";
	}
	else if (document.layers)
	{
		// nn4
		var style2 = document.layers[whichId].style;
		style2.display = style2.display? "":"block";
	}
}