// JavaScript Document - SubNav Toggle and ICO Swapper

function showAndHideMenu(targetMenuID,imageToSwap) {
	// check to see if the target menu is hidden or visible
	var attributeValue = document.getElementById(targetMenuID).style.display;
	
	// if its hidden, show it; change ICO image
	if(attributeValue == "none") {
		document.getElementById(targetMenuID).style.display="block";
		changeImages(imageToSwap,'/assets/images/subNav_ico_open.gif');
	} else { // if its visible, hide it; change ICO image
		document.getElementById(targetMenuID).style.display="none";
		changeImages(imageToSwap,'/assets/images/subNav_ico_closed.gif');
	};
};