/*
* The Zapatec DHTML utils library
*
* Copyright (c) 2004 by Zapatec, Inc.
* http://www.zapatec.com
* 1700 MLK Way, Berkeley, California,
* 94709, U.S.A.
* All rights reserved.
* $Id: utils.js 1068 2005-11-15 07:00:46Z dror $
*
*
* Various utility functions
*/
/// define the global Zapatec namespace
var Zapatec = {};

/// define the Utils namespace
Zapatec.Utils = {};

/// Retrieves the absolute position (relative to <body>) of a given element.
///
/// @param el [HTMLElement] reference to the element.
/// @return [object] { x, y } containing the position.
Zapatec.Utils.getAbsolutePos = function(el) {
	var SL = 0, ST = 0;
	var is_div = /^div$/i.test(el.tagName);
	if (is_div && el.scrollLeft)
		SL = el.scrollLeft;
	if (is_div && el.scrollTop)
		ST = el.scrollTop;
	var r = { x: el.offsetLeft - SL, y: el.offsetTop - ST };
	if (el.offsetParent) {
		var tmp = this.getAbsolutePos(el.offsetParent);
		r.x += tmp.x;
		r.y += tmp.y;
	}
	return r;
};

/// Modify the position of a box to fit in browser's view.  This function will
/// modify the passed object itself, so it doesn't need to return a value.
///
/// @param [object] box { x, y, width, height } specifying the area.
Zapatec.Utils.fixBoxPosition = function(box) {
	if (box.x < 0)
		box.x = 0;
	if (box.y < 0)
		box.y = 0;
	var cp = Zapatec.Utils.createElement("div");
	var s = cp.style;
	s.position = "absolute";
	s.right = s.bottom = s.width = s.height = "0px";
	window.document.body.appendChild(cp);
	var br = Zapatec.Utils.getAbsolutePos(cp);
	window.document.body.removeChild(cp);
	if (Zapatec.is_ie) {
		br.y += window.document.body.scrollTop;
		br.x += window.document.body.scrollLeft;
	} else {
		br.y += window.scrollY;
		br.x += window.scrollX;
	}
	var tmp = box.x + box.width - br.x;
	if (tmp > 0) box.x -= tmp;
	tmp = box.y + box.height - br.y;
	if (tmp > 0) box.y -= tmp;
};

/// Determines if an event is related to a certain element.  This is a poor
/// substitute for some events that are missing from DOM since forever (like
/// onenter, onleave, which MSIE provides).  Basically onmouseover and
/// onmouseout are fired even if the mouse was already in the element but moved
/// from text to a blank area, so in order not to close a popup element when
/// onmouseout occurs in this situation, one would need to first check if the
/// event is not related to that popup element:
///
/// \code
///      function handler_onMouseOut(event) {
///         if (!Zapatec.Utils.isRelated(this, event)) {
///            /// can safely hide it now
///            this.style.display = "none";
///         }
///      }
/// \endcode
///
/// @param el [HTMLElement] reference to the element to check the event against
/// @param evt [Event] reference to the Event object
/// @return [boolean] true if the event is related to the element
Zapatec.Utils.isRelated = function (el, evt) {
	evt || (evt = window.event);
	var related = evt.relatedTarget;
	if (!related) {
		var type = evt.type;
		if (type == "mouseover") {
			related = evt.fromElement;
		} else if (type == "mouseout") {
			related = evt.toElement;
		}
	}
	try {
		while (related) {
			if (related == el) {
				return true;
			}
			related = related.parentNode;
		}
	} catch(e) {};
	return false;
};

/// Remove a certain [CSS] class from the given element.
/// @param el [HTMLElement] reference to the element.
/// @param className [string] the class to remove.
Zapatec.Utils.removeClass = function(el, className) {
	if (!(el && el.className)) {
		return;
	}
	var cls = el.className.split(" ");
	var ar = [];
	for (var i = cls.length; i > 0;) {
		if (cls[--i] != className) {
			ar[ar.length] = cls[i];
		}
	}
	el.className = ar.join(" ");
};

/// Appends a certain [CSS] class to the given element.
/// @param el [HTMLElement] reference to the element.
/// @param className [string] the class to append.
Zapatec.Utils.addClass = function(el, className) {
	Zapatec.Utils.removeClass(el, className);
	el.className += " " + className;
};

/// Retrieves the current target element for some event (useful when bubbling).
/// This function is not actually very useful, but it's legacy from the old calendar code.
/// @param ev [Event] the event object.
/// @return [HTMLElement] window.event.srcElement for MSIE, ev.currentTarget for other browsers.
Zapatec.Utils.getElement = function(ev) {
	if (Zapatec.is_ie) {
		return window.event.srcElement;
	} else {
		return ev.currentTarget;
	}
};

/// Retrieves the target element for some event (useful when bubbling).
/// This function is not actually very useful, but it's legacy from the old calendar code.
/// @param ev [Event] the event object.
/// @return [HTMLElement] window.event.srcElement for MSIE, ev.target for other browsers.
Zapatec.Utils.getTargetElement = function(ev) {
	if (Zapatec.is_ie) {
		return window.event.srcElement;
	} else {
		return ev.target;
	}
};

/// Stops bubbling and propagation of some event.
/// @param ev [Event] the event object
/// @return false
Zapatec.Utils.stopEvent = function(ev) {
	ev || (ev = window.event);
	if (ev) {
		if (Zapatec.is_ie) {
			ev.cancelBubble = true;
			ev.returnValue = false;
		} else {
			ev.preventDefault();
			ev.stopPropagation();
		}
	}
	return false;
};

/// Adds an event handler to a certain element.  This function adds a handler
/// using the DOM2 addEventListener (or attachEvent for MSIE).  Doing this
/// means that you can add multiple handlers for the same element and same
/// event name, and they will be called in order.
///
/// WARNING: for really old browsers that don't support attachEvent nor
/// addEventListener, it falls back to the default way: el.onclick = func.
/// This means that you CANNOT add multiple handlers in those browsers, as a
/// new one will override the old one.
///
/// @param el [HTMLElement] reference to the element.
/// @param evname [string] the event name, excluding the "on" prefix.
/// @param func event handler function.
Zapatec.Utils.addEvent = function(el, evname, func) {
	if (el.attachEvent) { // IE
		el.attachEvent("on" + evname, func);
	} else if (el.addEventListener) { // Gecko / W3C
		el.addEventListener(evname, func, false);
	} else {
		el["on" + evname] = func;
	}
};

/// Removes an event handler added with Zapatec.Utils.removeEvent().  The
/// prototype scheme is the same.
Zapatec.Utils.removeEvent = function(el, evname, func) {
	if (el.detachEvent) { // IE
		el.detachEvent("on" + evname, func);
	} else if (el.removeEventListener) { // Gecko / W3C
		el.removeEventListener(evname, func, false);
	} else {
		el["on" + evname] = null;
	}
};

/// Create an element of a certain type using document.createElement().  A
/// function was needed in order to add some common attributes to all created
/// elements, but also in order to be able to use it in XHTML too (Gecko and
/// other W3C-compliant browsers).
///
/// This function will create an element of the given type and set certain
/// properties to it: unselectable for IE, and the CSS "-moz-user-select" for
/// Gecko, in order to make the element unselectable in these browsers.
/// Optionally, if the second argument is passed, it will appendChild() the
/// newly created element to its parent.
///
/// @param type [string] the tag name of the new element.
/// @param parent [HTMLElement, optional] a parent for the new element.
/// @return [HTMLElement] reference to the new element.
Zapatec.Utils.createElement = function(type, parent) {
	var el = null;
	if (window.self.document.createElementNS)
		// use the XHTML namespace; IE won't normally get here unless
		// _they_ "fix" the DOM2 implementation.
		el = window.self.document.createElementNS("http://www.w3.org/1999/xhtml", type);
	else
		el = window.self.document.createElement(type);
	if (typeof parent != "undefined")
		parent.appendChild(el);
	if (Zapatec.is_ie)
		el.setAttribute("unselectable", true);
	if (Zapatec.is_gecko)
		el.style.setProperty("-moz-user-select", "none", "");
	return el;
};

// Cookie management

/// Sets a cooke given certain specifications.  It overrides any existing
/// cookie with the same name.
///
/// @param name [string] the cookie name.
/// @param value [string] the cookie value.
/// @param domain [string, optional] the cookie domain.
/// @param path [string, optional] the cookie path.
/// @param exp_days [number, optional] number of days of cookie validity.
Zapatec.Utils.writeCookie = function(name, value, domain, path, exp_days) {
	value = escape(value);
	var ck = name + "=" + value, exp;
	if (domain)
		ck += ";domain=" + domain;
	if (path)
		ck += ";path=" + path;
	if (exp_days) {
		exp = new Date();
		exp.setTime(exp_days * 86400000 + exp.getTime());
		ck += ";expires=" + exp.toGMTString();
	}
	document.cookie = ck;
};

/**
 * Retrieves the value of a cookie.
 *
 * @param name [string] the cookie name
 * @return [string or null] a string with the cookie value, or null if it can't be found.
 */
Zapatec.Utils.getCookie = function(name) {
	var re = new RegExp("(^|;\\s*)" + name + "\\s*=(.*?)(;|$)");
	if (re.test(document.cookie)) {
		var value = RegExp.$2;
		value = unescape(value);
		return (value);
	}
	return null;
};

/**
 * Given an object, create a string suitable for saving the object in a cookie.
 * This is similar to serialization.  WARNING: it does not support nested
 * objects.
 *
 * @param obj [Object] reference to the object to serialize.
 * @return [string] the serialized object.
 */
Zapatec.Utils.makePref = function(obj) {
	function stringify(val) {
		if (typeof val == "object" && !val)
			return "null";
		else if (typeof val == "number" || typeof val == "boolean")
			return val;
		else if (typeof val == "string")
			return '"' + val.replace(/\22/, "\\22") + '"';
		else return null;
	};
	var txt = "", i;
	for (i in obj)
		txt += (txt ? ",'" : "'") + i + "':" + stringify(obj[i]);
	return txt;
};

/**
 * The reverse of Zapatec.Utils.makePref(), this function unserializes the
 * given string and creates an object from it.
 *
 * @param txt [string] the serialized value.
 * @return [Object] a new object if it was created successfully or null otherwise.
 */
Zapatec.Utils.loadPref = function(txt) {
	var obj = null;
	try {
		eval("obj={" + txt + "}");
	} catch(e) {}
	return obj;
};

/**
 * Merges the values of the source object into the destination object.
 *
 * @param dest [Object] the destination object.
 * @param src [Object] the source object.
 */
Zapatec.Utils.mergeObjects = function(dest, src) {
	for (var i in src)
		dest[i] = src[i];
};

// based on the WCH idea
// http://www.aplus.co.yu/WCH/code3/WCH.js

/// \defgroup WCH functions
//@{

Zapatec.Utils.__wch_id = 0;	/**< [number, static] used to create ID-s for the WCH objects */

/**
 * Create an WCH object.  This function does nothing if the browser is not
 * IE5.5 or IE6.0.  A WCH object is one of the most bizarre tricks to avoid a
 * notorious IE bug: IE normally shows "windowed controls" on top of any HTML
 * elements, regardless of any z-index that might be specified in CSS.  This
 * technique is described at: http://www.aplus.co.yu/WCH/
 *
 * A "WCH object" is actually an HTMLIFrame element having a certain "CSS
 * filter" (proprietary MSIE extension) that forces opacity zero.  This object,
 * displayed on top of a windowed control such as a select box, will completely
 * hide the select box, allowing us to place other HTMLElement objects above.
 *
 * WCH stands for "Windowed Controls Hider".
 *
 * @param element [HTMLElement, optional] -- Create the WCH IFRAME inside this.
 *
 *
 * @return [HTMLIFrame or null] a new WCH object if the browser is "supported", null otherwise.
 */
Zapatec.Utils.createWCH = function(element) {
	var f = null;
	element = element || window.self.document.body;
	if (Zapatec.is_ie && !Zapatec.is_ie5) {
		var filter = 'filter:progid:DXImageTransform.Microsoft.alpha(style=0,opacity=0);';
		var id = "WCH" + (++Zapatec.Utils.__wch_id);
		element.insertAdjacentHTML
			('beforeEnd', '<iframe id="' + id + '" scroll="no" frameborder="0" ' +
			 'style="z-index:0;position:absolute;visibility:hidden;' + filter +
			 'border:0;top:0;left:0;width:0;height:0;" ' +
			 'src="javascript:false;"></iframe>');
		f = window.self.document.getElementById(id);
	}
	return f;
};

/**
 * Configure a given WCH object to be displayed on top of the given element.
 * Optionally, a second element can be passed, and in this case it will setup
 * the WCH object to cover both elements.
 *
 * @param f [HTMLIFrame] the WCH object
 * @param el [HTMLElement] the element to cover.
 * @param el2 [HTMLElement, optional] another element to cover.
 */
Zapatec.Utils.setupWCH_el = function(f, el, el2) {
	if (f) {
		var pos = Zapatec.Utils.getAbsolutePos(el),
			X1 = pos.x,
			Y1 = pos.y,
			X2 = X1 + el.offsetWidth,
			Y2 = Y1 + el.offsetHeight;
		if (el2) {
			var p2 = Zapatec.Utils.getAbsolutePos(el2),
				XX1 = p2.x,
				YY1 = p2.y,
				XX2 = XX1 + el2.offsetWidth,
				YY2 = YY1 + el2.offsetHeight;
			if (X1 > XX1)
				X1 = XX1;
			if (Y1 > YY1)
				Y1 = YY1;
			if (X2 < XX2)
				X2 = XX2;
			if (Y2 < YY2)
				Y2 = YY2;
		}
		Zapatec.Utils.setupWCH(f, X1, Y1, X2-X1, Y2-Y1);
	}
};

/**
 * Configure a WCH object to cover a certain part of the screen.
 *
 * @param f [HTMLIFrame] the WCH object.
 * @param x [number] the X coordinate.
 * @param y [number] the Y coordinate.
 * @param w [number] the width of the area.
 * @param h [number] the height of the area.
 */
Zapatec.Utils.setupWCH = function(f, x, y, w, h) {
	if (f) {
		var s = f.style;
		(typeof x != "undefined") && (s.left = x + "px");
		(typeof y != "undefined") && (s.top = y + "px");
		(typeof w != "undefined") && (s.width = w + "px");
		(typeof h != "undefined") && (s.height = h + "px");
		s.visibility = "inherit";
	}
};

/**
 * Hide a WCH object.
 *
 * @param f [HTMLIFrame] object to hide.
 */
Zapatec.Utils.hideWCH = function(f) {
	if (f)
		f.style.visibility = "hidden";
};

//@}

/// \defgroup Scroll-with-window functions
//@{

/**
 * A generic Utils function that returns the current scroll position.
 *
 */
Zapatec.Utils.getPageScrollY = function() {
	return window.pageYOffset ||
			document.documentElement.scrollTop ||
			(document.body ? document.body.scrollTop : 0) ||
			0;
};

// Object setup.
Zapatec.ScrollWithWindow = {};
Zapatec.ScrollWithWindow.list = [];
// Set to a number between 0 and 1, lower means longer scrolling.
Zapatec.ScrollWithWindow.stickiness = 0.25;

/**
 * Registers a given object to have its style.top set equal to the window
 * scroll position as the browser scrolls.
 *
 * @param node [HTMLElement] -- a reference to the node to scroll.
 */
Zapatec.ScrollWithWindow.register = function(node) {
	var top = parseInt(node.style.top) || 0;
	var scrollY = window.pageYOffset || document.body.scrollTop ||
		document.documentElement.scrollTop || 0;
	top -= scrollY;
	if (top < 0) top = 0;
	Zapatec.ScrollWithWindow.list[Zapatec.ScrollWithWindow.list.length] = {
		node: node,
		origTop: top
	};
};

/**
 * Unregisters a given object.
 *
 * @param node [HTMLElement] -- a reference to the node to scroll.
 */
Zapatec.ScrollWithWindow.unregister = function(node) {
	for (var count = 0; count < Zapatec.ScrollWithWindow.list.length; count++) {
		var elm = Zapatec.ScrollWithWindow.list[count];
		if (node == elm.node) {
			Zapatec.ScrollWithWindow.list.splice(count, 1);
			return;
		}
	}
};

/**
 * \internal Called each time the window is scrolled to set objects' positions.
 *
 * @param newScrollY [number] -- the new window scroll position.
 */
Zapatec.ScrollWithWindow.handler = function(newScrollY) {
	// Move oldScrollY towards newScrollY, evening up if the difference is small.
	oldScrollY += ((newScrollY - oldScrollY) * this.stickiness);
	if (Math.abs(oldScrollY - newScrollY) <= 1) oldScrollY = newScrollY;
	for (var count = 0; count < Zapatec.ScrollWithWindow.list.length; count++) {
		var elm = Zapatec.ScrollWithWindow.list[count];
		var node = elm.node;
		if (!elm.origTop) {
			elm.origTop = Zapatec.Utils.getAbsolutePos(node).y;
			node.style.position = 'absolute';
		}
		node.style.top = elm.origTop + parseInt(oldScrollY) + 'px';
	}
};

// Processed scroll position & Event hook.
var oldScrollY = Zapatec.Utils.getPageScrollY();
setInterval(
	'var newScrollY = Zapatec.Utils.getPageScrollY(); ' +
	'if (newScrollY != oldScrollY) { ' +
		'Zapatec.ScrollWithWindow.handler(newScrollY); ' +
	'}', 50);

//@}

/**
 * Destroys the given element (remove it from the DOM tree) if it's not null
 * and it's parent is not null.
 *
 * @param el [HTMLElement] the element to destroy.
 */
Zapatec.Utils.destroy = function(el) {
	if (el && el.parentNode)
		el.parentNode.removeChild(el);
};

/**
 * Opens a new window at a certain URL and having some properties.
 *
 * @param url [string] the URL to open a new window to.
 * @param windowName [string] the name of the new window (as for target attribute).
 * @param width [number] the width of the new window in pixels.
 * @param height [number] the height of the new window in pixels.
 * @param scrollbars [string] "yes" or "no" for scrollbars.
 *
 * @return [object] the new window
 */
Zapatec.Utils.newCenteredWindow = function(url, windowName, width, height, scrollbars){
	var leftPosition = 0;
	var topPosition = 0;
	if (screen.width)
		leftPosition = (screen.width -  width)/2;
	if (screen.height)
		topPosition = (screen.height -  height)/2;
	var winArgs =
		'height=' + height +
		',width=' + width +
		',top=' + topPosition +
		',left=' + leftPosition +
		',scrollbars=' + scrollbars +
		',resizable';
	var win = window.open(url,windowName,winArgs);
	return win;
};

/**
 * Finds the size of the current web page. This is the usable size
 * and does not include the browser's menu and buttons.
 *
 * @return [object] dimension with the height and width of the window
 */
Zapatec.Utils.getWindowSize = function() {
	var windowHeight;
	var windowWidth;
	if (Zapatec.is_ie) {
		if (document.documentElement &&
				(document.documentElement.clientHeight != 0)) {//IE 6.0
			windowHeight = document.documentElement.clientHeight
				windowWidth = document.documentElement.clientWidth
		}       else {
			windowHeight = document.body.clientHeight;
			windowWidth = document.body.offsetWidth;
		}
	} else {
		// Gecko
		windowHeight = window.innerHeight;
		windowWidth = window.innerWidth;
	}
  var dimension = {};
	dimension.height = windowHeight;
	dimension.width = windowWidth;
	return dimension;
}


/**
 * Given a reference to a select element, this function will select the option
 * having the given value and optionally will call the default handler for
 * "onchange".
 *
 * @param sel [HTMLSelectElement] reference to the SELECT element.
 * @param val [string] the value that we should select.
 * @param call_default [boolean] true if the default onchange should be called.
 */
Zapatec.Utils.selectOption = function(sel, val, call_default) {
	var a = sel.options, i, o;
	for (i = a.length; --i >= 0;) {
		o = a[i];
		o.selected = (o.val == val);
	}
	sel.value = val;
	if (call_default) {
		if (typeof sel.onchange == "function")
			sel.onchange();
		else if (typeof sel.onchange == "string")
			eval(sel.onchange);
	}
};

/**
 * A more flexible way to get the "nextSibling" of a given element.  If the
 * "tag" argument is passed, then this function will return the next sibling
 * that has a certain tag.  Otherwise it will simply return el.nextSibling.
 *
 * @param el [HTMLElement] reference to the anchor element.
 * @param tag [string] the tag name of the returned node.
 *
 * @return [HTMLElement or null] el.nextSibling if tag is not passed, or the
 * first element after el having the specified tag.  Null is returned if no
 * element could be found.
 */
Zapatec.Utils.getNextSibling = function(el, tag) {
	el = el.nextSibling;
	if (!tag)
		return el;
	tag = tag.toLowerCase();
	while (el && (el.nodeType != 1 || el.tagName.toLowerCase() != tag))
		el = el.nextSibling;
	return el;
};

/**
 * Similar to Zapatec.Utils.getNextSibling(), this function will return the
 * first child of the given element that has a specified tag.
 *
 * @param el [HTMLElement] reference to the anchor element.
 * @param tag [string] the tag name of the returned node.
 *
 * @return [HTMLElement] reference to the found node, or null if none could be
 * found.
 */
Zapatec.Utils.getFirstChild = function(el, tag) {
	el = el.firstChild;
	if (!tag)
		return el;
	tag = tag.toLowerCase();
	if (el.nodeType == 1 && el.tagName.toLowerCase() == tag)
		return el;
	return Zapatec.Utils.getNextSibling(el, tag);
};

Zapatec.Utils._ids = {};	/**< [number, static] maintains a list of generated IDs */

/**
 * Generates an unique ID, for a certain code (let's say "class").  If the
 * optional "id" argument is passed, then it just returns the id for that code
 * (no generation).  This function is sometimes useful when we need to create
 * elements and be able to access them later by ID.
 *
 * @param code [string] the class of ids.  User defined, can be anything.
 * @param id [string, optional] specify if the ID is already known.
 *
 * @return [string] the unique ID
 */
Zapatec.Utils.generateID = function(code, id) {
	if (typeof id == "undefined") {
		if (typeof this._ids[code] == "undefined")
			this._ids[code] = 0;
		id = ++this._ids[code];
	}
	return "zapatec-" + code + "-" + id;
};

/**
*  Add a tooltip to the specified element.
*
*  Function that adds a custom tooltip for an element.  The "target" is the
*  element to where the tooltip should be added to, and the "tooltip" is a DIV
*  that contains the tooltip text.  Optionally, the tooltip DIV can have the
*  "title" attribute set; if so, its value will be displayed highlighted as
*  the title of the tooltip.
*
*  @param target  reference to or ID of the target element
*  @param tooltip reference to or ID of the tooltip content element
*/

Zapatec.Utils.addTooltip = function(target, tooltip) {
return new Zapatec.Tooltip(target, tooltip);
};

Zapatec.isLite=true;

Zapatec.Utils.checkActivation = function() {
	if (!Zapatec.isLite)	return true;

	var bWizard=false;
	var arrProducts=[];
	var ii;
	var scripts = document.getElementsByTagName('script');
	for(ii = 0; ii < scripts.length; ii++)
	{
		if (/src\/calendar.js/i.test(scripts[ii].src))
			arrProducts["calendar"]=true
		else
		if (/src\/menu.js/i.test(scripts[ii].src))
			arrProducts["menu"]=true
		else
		if (/src\/tree.js/i.test(scripts[ii].src))
			arrProducts["tree"]=true

		if (/wizard.js/i.test(scripts[ii].src))
			bWizard=true
	}
	
	var bProduct=false;
	for (ii in arrProducts)
		if (arrProducts[ii]) 
		{
			bProduct=true
			break
		}

	// Is a product even being used?
	if (!bProduct) return true;

	if (bWizard) return true;

	var anchors = document.getElementsByTagName('A');
	for(ii = 0; ii < anchors.length; ii++)
		if (/(dev|www)\.zapatec\.com/i.test(anchors[ii].href))
			return true;

	var strMsg="";
	strMsg='You are using the Free version of the Zapatec Software.\n'+
	'While using the Free version, a link to www.zapatec.com in this page is required.'

	if (arrProducts["calendar"])
		strMsg+='\nTo purchase the Zapatec Calendar visit www.zapatec.com/website/main/products/prod1/.'
	if (arrProducts["menu"])
		strMsg+='\nTo purchase the Zapatec Menu visit www.zapatec.com/website/main/products/prod2/.'
	if (arrProducts["tree"])
		strMsg+='\nTo purchase the Zapatec Tree visit www.zapatec.com/website/main/products/prod3/.'

	//alert(strMsg)

	return false;
}


// Browser sniffing

/// detect Opera browser
Zapatec.is_opera = /opera/i.test(navigator.userAgent);

/// detect a special case of "web browser"
Zapatec.is_ie = ( /msie/i.test(navigator.userAgent) && !Zapatec.is_opera );

/// detect IE5.0/Win
Zapatec.is_ie5 = ( Zapatec.is_ie && /msie 5\.0/i.test(navigator.userAgent) );

/// detect IE for Macintosh
Zapatec.is_mac_ie = ( /msie.*mac/i.test(navigator.userAgent) && !Zapatec.is_opera );

/// detect KHTML-based browsers
Zapatec.is_khtml = /Konqueror|Safari|KHTML/i.test(navigator.userAgent);

/// detect Konqueror
Zapatec.is_konqueror = /Konqueror/i.test(navigator.userAgent);

/// detect Gecko
Zapatec.is_gecko = /Gecko/i.test(navigator.userAgent);
