// JavaScript Document
	var lastShown = null;
	var lastImg = null;
	function showHide(submenu){
		currentShown = document.getElementById('tr'+submenu);
		currentImg = document.getElementById('img'+submenu);
		if(lastShown!=null) lastShown.style.display = 'none';
		if(lastImg!=null) lastImg.src = src="/images/2_18.gif";
		currentShown.style.display = '';
			currentImg.src = "/images/2_58.gif";
		lastShown = currentShown;
		lastImg = currentImg;
		
		
	}