function showHideSubMenu(menu)
	{
		displayItem = document.getElementById(menu).style;
		if (displayItem.display == 'none')
			// it displays the content of the selected item and close all the others
			{
				displayItem.display = '';
				s_href = document.getElementById('link_print').href
				v_href = s_href.indexOf('display');
				
				if (v_href == -1)
				 	document.getElementById('link_print').href = s_href+'/display/'+menu
				else
				{
					s_link = s_href.substr(0,v_href);
					document.getElementById('link_print').href = s_link + 'display/'+menu;
				}
				
				//put the list of sections from the query in an array
				array_section = new Array('motorsport','football','golf','rugby');	
				
				// loop around the array to 'close' the content and change the arrow
				for(num=0; num < array_section.length; num++)
				{
					var_item = array_section[num];
					if (var_item != menu)
					{
						if (document.getElementById(var_item).style.display != 'none')					
							document.getElementById(var_item).style.display = 'none';
					}
				}
			}
		else
			displayItem.display = 'none';
	}