//Constructs the navigation menu
function buildMenu()
{
	var itemCount = 0;
	var submenu;
	var hasSubMenu = 0;
	
	//Iterate over each main menu item
	for (var i=0; i<aMenu.length; i+=3)
	{
		itemCount++;
		hasSubMenu = 0;
		menuHTML = menuHTML + "<li><a ";
		if (typeof(window["aMenu" + "_" + itemCount]) != "undefined")
		{
			hasSubMenu = 1;
			menuHTML = menuHTML + "class=\"trigger\" ";
		}
		
		menuHTML = menuHTML + "href=\"" + aMenu[i+1] + "\">" + aMenu[i] + "</a>";
		
		//Construct sub-menu for each menu item
		if (hasSubMenu)
		{
			submenu = eval("aMenu" + "_" + itemCount);
			menuHTML = menuHTML + "<ul>";
			
			//Iterate over each menu item in this submenu
			for (var j=0; j<submenu.length; j+=3)
			{
				menuHTML = menuHTML + "<li><a href=\"" + submenu[j+1] + "\">" + submenu[j] + "</a></li>";	
			}
			menuHTML = menuHTML + "</ul>";
		}
		menuHTML = menuHTML + "</li>";
	}
}