function showHideItems(myItem, myButton){
	var myItem = document.getElementById(myItem);	
	var myButton = document.getElementById(myButton);
	
	if (myItem.style.display != "none") {
		myItem.style.display = "none";
		swapImage(myButton,"plus");
	}
	else {
		myItem.style.display = "block";
		swapImage(myButton,"minus");
	}
}

function swapImage(myImage, state) {
	if (state == "minus") {
		myImage.src = "/images/expanded.gif";
	}
	else {
		myImage.src = "/images/collapsed.gif";
	}
}