var div_array = new Array("shopping","products","policies","other");

function changeDiv (the_div, the_change)
{
	document.getElementById(the_div).style.visibility = the_change;
}

function closeAll ()
{
	for (var loop = 0; loop < div_array.length; loop++)
	{
		changeDiv (div_array[loop], "hidden");
	}
}