var hasBeenLoaded = false;

function ShowContentBlock(theId, numberOfBlocks)
{
	if (hasBeenLoaded)
	{
		HideContentBlocks(numberOfBlocks);
		document.getElementById('myContent' + theId).style.display = 'block';
	}
}


function HideContentBlocks(numberOfBlocks)
{
	if (hasBeenLoaded)
	{
		for (i = 1; i < numberOfBlocks; i++)
		{
			document.getElementById('myContent' + i).style.display = 'none';
		}
	}
}

/* Client-side access to querystring name=value pairs
Version 1.3
28 May 2008

License (Simplified BSD):
http://adamv.com/dev/javascript/qslicense.txt
*/
function Querystring(qs)
{ 
	// optionally pass a querystring to parse
	this.params = {};

	if (qs == null)
	{
		qs = location.search.substring(1, location.search.length);
	}

	if (qs.length == 0)
	{
		return;
	}

	// Turn <plus> back to <space>
	// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ');
	var args = qs.split('&'); // parse out name/value pairs separated via &

	// split out each name=value pair
	for (var i = 0; i < args.length; i++)
	{
		var pair = args[i].split('=');
		var name = decodeURIComponent(pair[0]);

		var value = (pair.length==2) ? decodeURIComponent(pair[1]) : name;

		this.params[name] = value;
	}
}

Querystring.prototype.get = function(key, default_)
{
	var value = this.params[key];
	return (value != null) ? value : default_;
}

Querystring.prototype.contains = function(key)
{
	var value = this.params[key];
	return (value != null);
}