//------------------------------------------------------------------------------
// IPS JS: HIERARCHICAL DISPLAY FUNCTIONS
// (c) 2005 Invision Power Services, Inc.
// http://www.invisionpower.com
// Matt Mecham (13/12/05)
//------------------------------------------------------------------------------

function hierarchical()
{
	/**
	* Class variables.
	*
	* @var	string	Cookie name
	* @var	string	Refresh display URL
	* @var	string	First part of the image ID title string
	*/
	
	this.cookie_name          = '';
	this.location_url         = '';
	this.toggle_image_id_name = 'hier-toggle';
	
	/**
	* INIT: Grabs IDs from the HTML and
	* sets up the various functions
	*/
	
	this.init = function()
	{
		//-----------------------------------------
		// Do DIVs
		//-----------------------------------------
		
		var divs = document.getElementsByTagName('IMG');

		//----------------------------------
		// Sort through and grab links
		//----------------------------------

		for ( var i = 0 ; i < divs.length ; i++ )
		{
			try
			{
				if ( ! divs[i].id )
				{
					continue;
				}
			}
			catch(error)
			{
				continue;
			}

			var divid   = divs[i].id;
			var divname = ipsclass.get_name_from_text( divid );
			var divnum  = ipsclass.get_id_from_text( divid );

			//----------------------------------
			// Work with it?
			//----------------------------------

			if ( divname == this.toggle_image_id_name )
			{
				divs[i].style.cursor         = 'pointer';
				divs[i].toggle_image_id_name = this.toggle_image_id_name;
				divs[i].location_url         = this.location_url;
				divs[i].cookie_name          = this.cookie_name;
				divs[i].toggle_id			 = divnum;
				divs[i].onclick              = hierarchical_events.prototype.toggle_folder;
			}
		}
	};
}

/**
* Wrapper function
*/
function hierarchical_events()
{
	
}

/**
* Toggle Folder Action
* @param	object Event Object
*/
hierarchical_events.prototype.toggle_folder = function( e )
{
	//-----------------------------------------
	// Check..
	//-----------------------------------------
	
	if ( ! this.cookie_name )
	{
		return false;
	}
	
	//-----------------------------------------
	// Cancel event bubbling
	//-----------------------------------------
	
	e = ipsclass.cancel_bubble(e, true);
	
	//-----------------------------------------
	// Set up
	//-----------------------------------------
	
	var saved    = new Array();
	var clean    = new Array();
	var found_id = 0;
	
	//-----------------------------------
	// Get any saved info
	//-----------------------------------
	
	if ( tmp = ipsclass.my_getcookie( this.cookie_name ) )
	{
		saved = tmp.split(",");
	}
	
	//-----------------------------------
	// Remove bit if exists
	//-----------------------------------
	
	for( i = 0 ; i < saved.length; i++ )
	{
		if ( saved[i] != this.toggle_id && saved[i] != "" )
		{
			clean[clean.length] = saved[i];
		}
		else if ( saved[i] == this.toggle_id )
		{
			found_id = 1;
		}
	}
	
	//-----------------------------------
	// Not found the ID, so add it
	//-----------------------------------
	
	if ( ! found_id )
	{
		clean[ clean.length ] = this.toggle_id;
	}
	
	ipsclass.my_setcookie( this.cookie_name, clean.join(','), 1 );
	ipsclass.location_jump( this.location_url, true );
};