function PageQuery( q )
{
	if( q.length > 1 )
	{
		this.q = q.substring( 1, q.length );
	}

	else
	{
		this.q = null;
	}

	this.keyValuePairs = new Array();

	if( q )
	{
		for( var i=0; i < this.q.split( "&" ).length; i++ )
		{
			this.keyValuePairs[i] = this.q.split( "&" )[i];
		}
	}

	this.getKeyValuePairs = function()
	{
		return this.keyValuePairs;
	}

	this.getValue = function( s )
	{
		for( var j=0; j < this.keyValuePairs.length; j++ )
		{
			if( this.keyValuePairs[j].split( "=" )[0] == s )
			{
				return this.keyValuePairs[j].split("=")[1];
			}
		}
		return false;
	}

	this.getParameters = function()
	{
		var a = new Array( this.getLength() );

		for( var j=0; j < this.keyValuePairs.length; j++ )
		{
			a[j] = this.keyValuePairs[j].split( "=" )[0];
		}
		return a;
	}
    
	this.getLength = function()
	{
		return this.keyValuePairs.length;
	}
}

function requestQueryString( key )
{
	var page = new PageQuery( window.location.search );
	var value = unescape( page.getValue( key ) );

	if ( value != 'false' )
	{
		return value;
	}
	else
	{
		return "";
	}
}