// JavaScript Document

function toggleMenu (id) {
	
	var a = document.getElementById('menu' + id)
	var img = document.getElementById('arrow' + id)
	
	//alert(a.style.display.value);
	 
	if(a.style.display == 'none' || a.style.display == '' ) 
			{
			a.style.display = 'block';
			img.src = "images/arrowup.gif"
			}
	else
			{
			a.style.display = 'none';
			img.src = "images/arrowdown.gif"
			}
		
	
}