Event.observe(document, 'dom:loaded', function()
{
    //toggle hidden
    
    $('name').value == ''?$('name').hide():$('name_cover').hide();
    $('email').value == ''?$('email').hide():$('email_cover').hide();
    $('message').innerHTML == ''?$('message').hide():$('message_cover').hide();
    
    $('name_cover').onfocus = function()
	{
		$('name_cover').hide();
		$('name').show();
		$('name').focus();
	}
	
	$('name').onblur = function()
	{
		if($('name').value=='')
		{
			$('name').hide();
			$('name_cover').show();
		}
	}
	
	$('email_cover').onfocus = function()
	{
		$('email_cover').hide();
		$('email').show();
		$('email').focus();
	}
	
	$('email').onblur = function()
	{
		if($('email').value=='')
		{
			$('email').hide();
			$('email_cover').show();
		}
	}
	
	$('message_cover').onfocus = function()
	{
		$('message_cover').hide();
		$('message').show();
		$('message').focus();
	}
	
	$('message').onblur = function()
	{
		if($('message').value=='')
		{
			$('message').hide();
			$('message_cover').show();
		}
	}

});