function imgSwitch(id,new_img)
{
	menu_item = document.getElementById(id);
	menu_item.src = new_img;
}

function show_guest()
{
	if(document.getElementById('guest_ins').style.display == 'none')
	{
		document.getElementById('guest_ins').style.display = 'block';     
	}
	else
	{
		document.getElementById('guest_ins').style.display = 'none'
	}   
}