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)

	if (ie55)
	{
		document._getElementsByTagName = document.getElementsByTagName;
		document.getElementsByTagName = function(sTagName)
		{
			if (sTagName == "*")
				return document.all;
			else
				return document._getElementsByTagName(sTagName);
		};
	}

	return hasSupport.support;
}

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;

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

	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;


	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 );
	}
};

WebFXTabPane.prototype.getSelectedIndex = function ()
{
	return this.selectedIndex;
};

WebFXTabPane.prototype.addTabPage = function (oElement)
{
	if (!hasSupport()) return;

	if (oElement.tabPage == this)
		return oElement.tabPage;

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

	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;
};


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);
};

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;
		}
	}

	var a = document.createElement("SPAN");
	this.aElement = a;
	a.href = "#";
	a.onclick = function() { return false; };
	while (this.tab.hasChildNodes())
		a.appendChild(this.tab.firstChild);
	this.tab.appendChild(a);

	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;
};


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;

		if ( cn == "" ) continue;

		if ( tabPaneRe.test( cn ) && !el.tabPane )
			new WebFXTabPane( el );

		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;

		if (cn == "") continue;

		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;
	}
}


if (typeof window.addEventListener != "undefined")
	window.addEventListener("load", setupAllTabs, false);
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;
}