if (document.getElementById && document.getElementsByTagName && document.createTextNode) {
	document.write('<link rel="stylesheet" type="text/css" href="/main/js/js_showhide.css" />');
}

//function to display or hide a given element
function showHideItems(myItem, myOldItem){

	//this is the ID of the hidden item
	var myItem = document.getElementById(myItem);

	//this is the ID of the plus/minus button image
	var myOldItem = document.getElementById(myOldItem);

	//items are currently hidden, so display them
	myItem.style.display = "inline";
	swapItem(myOldItem,"off");
}

//function to hide old Item
function swapItem (myItemOld, state) {
	if (state == "off") {
		myItemOld.style.display = "none";
	} else {
		myItemOld.style.display = "inline";
	}
}