function Hidden ( block )
{
	var element = document.getElementById(block);
	var classes = document.getElementsByTagName("div");
	
	for(var i = 0; i < classes.length; i++)
	{
		var current = classes[i];
		if(current.className == 'content')
		{
			current.style.display = 'none';
		}
	}
	
	if ( element.style.display == 'none' )
	{
		
		element.style.display = 'block';
	}
	else
	{
		element.style.display = 'none';
	}
}