/*----------------------------------------------------------------------------\

|                               Tab Pane 1.02                                 |

|-----------------------------------------------------------------------------|

|                         Created by Erik Arvidsson                           |

|                  (http://webfx.eae.net/contact.html#erik)                   |

|                      For WebFX (http://webfx.eae.net/)                      |

|-----------------------------------------------------------------------------|

|                  Copyright (c) 1998 - 2003 Erik Arvidsson                   |

|-----------------------------------------------------------------------------|

| This software is provided "as is", without warranty of any kind, express or |

| implied, including  but not limited  to the warranties of  merchantability, |

| fitness for a particular purpose and noninfringement. In no event shall the |

| authors or  copyright  holders be  liable for any claim,  damages or  other |

| liability, whether  in an  action of  contract, tort  or otherwise, arising |

| from,  out of  or in  connection with  the software or  the  use  or  other |

| dealings in the software.                                                   |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| This  software is  available under the  three different licenses  mentioned |

| below.  To use this software you must chose, and qualify, for one of those. |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| The WebFX Non-Commercial License          http://webfx.eae.net/license.html |

| Permits  anyone the right to use the  software in a  non-commercial context |

| free of charge.                                                             |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| The WebFX Commercial license           http://webfx.eae.net/commercial.html |

| Permits the  license holder the right to use  the software in a  commercial |

| context. Such license must be specifically obtained, however it's valid for |

| any number of  implementations of the licensed software.                    |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| GPL - The GNU General Public License    http://www.gnu.org/licenses/gpl.txt |

| Permits anyone the right to use and modify the software without limitations |

| as long as proper  credits are given  and the original  and modified source |

| code are included. Requires  that the final product, software derivate from |

| the original  source or any  software  utilizing a GPL  component, such  as |

| this, is also licensed under the GPL license.                               |

|-----------------------------------------------------------------------------|

| 2002-01-?? | First working version                                          |

| 2002-02-17 | Cleaned up for 1.0 public version                              |

| 2003-02-18 | Changed from javascript uri for anchors to return false        |

| 2003-03-03 | Added dispose methods to release IE memory                     |

|-----------------------------------------------------------------------------|

| Dependencies: *.css           a css file to define the layout               |

|-----------------------------------------------------------------------------|

| Created 2002-01-?? | All changes are in the log above. | Updated 2003-03-03 |

\----------------------------------------------------------------------------*/



// This function is used to define if the browser supports the needed

// features

function hasSupport() {



	if (typeof hasSupport.support != "undefined")

		return hasSupport.support;

	

	var ie55 = /msie 5\.[56789]/i.test( navigator.userAgent );

	

	hasSupport.support = ( typeof document.implementation != "undefined" &&

			document.implementation.hasFeature( "html", "1.0" ) || ie55 )

			

	// IE55 has a serious DOM1 bug... Patch it!

	if ( ie55 ) {

		document._getElementsByTagName = document.getElementsByTagName;

		document.getElementsByTagName = function ( sTagName ) {

			if ( sTagName == "*" )

				return document.all;

			else

				return document._getElementsByTagName( sTagName );

		};

	}



	return hasSupport.support;

}



///////////////////////////////////////////////////////////////////////////////////

// The constructor for tab panes

//

// el : HTMLElement		The html element used to represent the tab pane

// bUseCookie : Boolean	Optional. Default is true. Used to determine whether to us

//						persistance using cookies or not

//

function WebFXTabPane( el, bUseCookie ) {

	if ( !hasSupport() || el == null ) return;

	

	this.element = el;

	this.element.tabPane = this;

	this.pages = [];

	this.selectedIndex = null;

	this.useCookie = bUseCookie != null ? bUseCookie : true;

	

	// add class name tag to class name

	this.element.className = this.classNameTag + " " + this.element.className;

	

	// add tab row

	this.tabRow = document.createElement( "div" );

	this.tabRow.className = "tab-row";

	el.insertBefore( this.tabRow, el.firstChild );



	var tabIndex = 0;

	if ( this.useCookie ) {

		tabIndex = Number( WebFXTabPane.getCookie( "webfxtab_" + this.element.id ) );

		if ( isNaN( tabIndex ) )

			tabIndex = 0;

	}

	this.selectedIndex = tabIndex;

	

	// loop through child nodes and add them

	var cs = el.childNodes;

	var n;

	for (var i = 0; i < cs.length; i++) {

		if (cs[i].nodeType == 1 && cs[i].className == "tab-page") {

			this.addTabPage( cs[i] );

		}

	}

}



WebFXTabPane.prototype.classNameTag = "dynamic-tab-pane-control";



WebFXTabPane.prototype.setSelectedIndex = function ( n ) {

	if (this.selectedIndex != n) {

		if (this.selectedIndex != null && this.pages[ this.selectedIndex ] != null )

			this.pages[ this.selectedIndex ].hide();

		this.selectedIndex = n;

		this.pages[ this.selectedIndex ].show();

		

		if ( this.useCookie )

			WebFXTabPane.setCookie( "webfxtab_" + this.element.id, n );	// session cookie

	}

};

	

WebFXTabPane.prototype.getSelectedIndex = function () {

	return this.selectedIndex;

};

	

WebFXTabPane.prototype.addTabPage = function ( oElement ) {

	if ( !hasSupport() ) return;

	

	if ( oElement.tabPage == this )	// already added

		return oElement.tabPage;



	var n = this.pages.length;

	var tp = this.pages[n] = new WebFXTabPage( oElement, this, n );

	tp.tabPane = this;

	

	// move the tab out of the box

	this.tabRow.appendChild( tp.tab );

			

	if ( n == this.selectedIndex )

		tp.show();

	else

		tp.hide();

		

	return tp;

};

	

WebFXTabPane.prototype.dispose = function () {

	this.element.tabPane = null;

	this.element = null;		

	this.tabRow = null;

	

	for (var i = 0; i < this.pages.length; i++) {

		this.pages[i].dispose();

		this.pages[i] = null;

	}

	this.pages = null;

};







// Cookie handling

WebFXTabPane.setCookie = function ( sName, sValue, nDays ) {

	var expires = "";

	if ( nDays ) {

		var d = new Date();

		d.setTime( d.getTime() + nDays * 24 * 60 * 60 * 1000 );

		expires = "; expires=" + d.toGMTString();

	}



	document.cookie = sName + "=" + sValue + expires + "; path=/";

};



WebFXTabPane.getCookie = function (sName) {

	var re = new RegExp( "(\;|^)[^;]*(" + sName + ")\=([^;]*)(;|$)" );

	var res = re.exec( document.cookie );

	return res != null ? res[3] : null;

};



WebFXTabPane.removeCookie = function ( name ) {

	setCookie( name, "", -1 );

};

















///////////////////////////////////////////////////////////////////////////////////

// The constructor for tab pages. This one should not be used.

// Use WebFXTabPage.addTabPage instead

//

// el : HTMLElement			The html element used to represent the tab pane

// tabPane : WebFXTabPane	The parent tab pane

// nindex :	Number			The index of the page in the parent pane page array

//

function WebFXTabPage( el, tabPane, nIndex ) {

	if ( !hasSupport() || el == null ) return;

	

	this.element = el;

	this.element.tabPage = this;

	this.index = nIndex;

	

	var cs = el.childNodes;

	for (var i = 0; i < cs.length; i++) {

		if (cs[i].nodeType == 1 && cs[i].className == "tab") {

			this.tab = cs[i];

			break;

		}

	}

	

	// insert a tag around content to support keyboard navigation

	

	

	var a = document.createElement( "A" );

	this.aElement = a;

	a.href = "#";

	a.onclick = function () { return false; };

	while ( this.tab.hasChildNodes() )

		a.appendChild( this.tab.firstChild );

	this.tab.appendChild( a );



	

	// hook up events, using DOM0

	var oThis = this;

	this.tab.onclick = function () { oThis.select(); };

	this.tab.onmouseover = function () { WebFXTabPage.tabOver( oThis ); };

	this.tab.onmouseout = function () { WebFXTabPage.tabOut( oThis ); };

}



WebFXTabPage.prototype.show = function () {

	var el = this.tab;

	var s = el.className + " selected";

	s = s.replace(/ +/g, " ");

	el.className = s;

	

	this.element.style.display = "block";

};



WebFXTabPage.prototype.hide = function () {

	var el = this.tab;

	var s = el.className;

	s = s.replace(/ selected/g, "");

	el.className = s;



	this.element.style.display = "none";

};

	

WebFXTabPage.prototype.select = function () {

	this.tabPane.setSelectedIndex( this.index );

};

	

WebFXTabPage.prototype.dispose = function () {

	this.aElement.onclick = null;

	this.aElement = null;

	this.element.tabPage = null;

	this.tab.onclick = null;

	this.tab.onmouseover = null;

	this.tab.onmouseout = null;

	this.tab = null;

	this.tabPane = null;

	this.element = null;

};



WebFXTabPage.tabOver = function ( tabpage ) {

	var el = tabpage.tab;

	var s = el.className + " hover";

	s = s.replace(/ +/g, " ");

	el.className = s;

};



WebFXTabPage.tabOut = function ( tabpage ) {

	var el = tabpage.tab;

	var s = el.className;

	s = s.replace(/ hover/g, "");

	el.className = s;

};





// This function initializes all uninitialized tab panes and tab pages

function setupAllTabs() {

	if ( !hasSupport() ) return;



	var all = document.getElementsByTagName( "*" );

	var l = all.length;

	var tabPaneRe = /tab\-pane/;

	var tabPageRe = /tab\-page/;

	var cn, el;

	var parentTabPane;

	

	for ( var i = 0; i < l; i++ ) {

		el = all[i]

		cn = el.className;



		// no className

		if ( cn == "" ) continue;

		

		// uninitiated tab pane

		if ( tabPaneRe.test( cn ) && !el.tabPane )

			new WebFXTabPane( el );

	

		// unitiated tab page wit a valid tab pane parent

		else if ( tabPageRe.test( cn ) && !el.tabPage &&

					tabPaneRe.test( el.parentNode.className ) ) {

			el.parentNode.tabPane.addTabPage( el );			

		}

	}

}



function disposeAllTabs() {

	if ( !hasSupport() ) return;

	

	var all = document.getElementsByTagName( "*" );

	var l = all.length;

	var tabPaneRe = /tab\-pane/;

	var cn, el;

	var tabPanes = [];

	

	for ( var i = 0; i < l; i++ ) {

		el = all[i]

		cn = el.className;



		// no className

		if ( cn == "" ) continue;

		

		// tab pane

		if ( tabPaneRe.test( cn ) && el.tabPane )

			tabPanes[tabPanes.length] = el.tabPane;

	}

	

	for (var i = tabPanes.length - 1; i >= 0; i--) {

		tabPanes[i].dispose();

		tabPanes[i] = null;

	}

}





// initialization hook up



// DOM2

if ( typeof window.addEventListener != "undefined" )

	window.addEventListener( "load", setupAllTabs, false );



// IE 

else if ( typeof window.attachEvent != "undefined" ) {

	window.attachEvent( "onload", setupAllTabs );

	window.attachEvent( "onunload", disposeAllTabs );

}



else {

	if ( window.onload != null ) {

		var oldOnload = window.onload;

		window.onload = function ( e ) {

			oldOnload( e );

			setupAllTabs();

		};

	}

	else 

		window.onload = setupAllTabs;

}