function Show(letter)
{
	var divs = document.getElementsByTagName('div');
	if (letter == 'Load')
	{
	  // Page being loaded - might be for first time or after pressing back
	  // Check contents of cookie and work out what to show
	  letter = $.cookie("lastletter");
	  if (letter == null)
	    letter = "All";
  }
	
	if (letter == 'All')
	{
		for(var x=0; x< divs.length; x++)
		{
			if(divs[x].id.indexOf('section_') != -1)
				divs[x].style.display = 'block';
		}
  	$.cookie('lastletter', null)
	} 
	else 
	{
		for(var x=0; x< divs.length; x++)
		{
			if(divs[x].id.indexOf('section_') != -1)
				divs[x].style.display = 'none';
		}
		
		var div = document.getElementById('section_' + letter);
		div.style.display = 'block';
  	$.cookie('lastletter', letter)
	}
}