//-----------------------------------------
// Show/Hide Sub Menu
//-----------------------------------------
function showSubMenu(id) {
	
	for(i = 1; i <= 3; i++) {
			
		if (id == i) {
			
			var show = document.getElementById("sub_menu_" + i);
							
			if(show.style.display == 'block') {
			
				show.style.display = 'none';
				
			} else {
			
				show.style.display = 'block';
				
			}	
											
		} else {
					
			var temp = document.getElementById("sub_menu_" + i)
			temp.style.display = 'none';	
					
		}
	}	
				
}