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+/** $Id: domLib.js,v 1.1 2007/01/04 22:29:18 thomas Exp $ */
+// {{{ license
+
+/*
+ * Copyright 2002-2005 Dan Allen, Mojavelinux.com (dan.allen@mojavelinux.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// }}}
+// {{{ intro
+
+/**
+ * Title: DOM Library Core
+ * Version: 0.70
+ *
+ * Summary:
+ * A set of commonly used functions that make it easier to create javascript
+ * applications that rely on the DOM.
+ *
+ * Updated: 2005/05/17
+ *
+ * Maintainer: Dan Allen <dan.allen@mojavelinux.com>
+ * Maintainer: Jason Rust <jrust@rustyparts.com>
+ *
+ * License: Apache 2.0
+ */
+
+// }}}
+// {{{ global constants (DO NOT EDIT)
+
+// -- Browser Detection --
+var domLib_userAgent = navigator.userAgent.toLowerCase();
+var domLib_isMac = navigator.appVersion.indexOf('Mac') != -1;
+var domLib_isWin = domLib_userAgent.indexOf('windows') != -1;
+// NOTE: could use window.opera for detecting Opera
+var domLib_isOpera = domLib_userAgent.indexOf('opera') != -1;
+var domLib_isOpera7up = domLib_userAgent.match(/opera.(7|8)/i);
+var domLib_isSafari = domLib_userAgent.indexOf('safari') != -1;
+var domLib_isKonq = domLib_userAgent.indexOf('konqueror') != -1;
+// Both konqueror and safari use the khtml rendering engine
+var domLib_isKHTML = (domLib_isKonq || domLib_isSafari || domLib_userAgent.indexOf('khtml') != -1);
+var domLib_isIE = (!domLib_isKHTML && !domLib_isOpera && (domLib_userAgent.indexOf('msie 5') != -1 || domLib_userAgent.indexOf('msie 6') != -1 || domLib_userAgent.indexOf('msie 7') != -1));
+var domLib_isIE5up = domLib_isIE;
+var domLib_isIE50 = (domLib_isIE && domLib_userAgent.indexOf('msie 5.0') != -1);
+var domLib_isIE55 = (domLib_isIE && domLib_userAgent.indexOf('msie 5.5') != -1);
+var domLib_isIE5 = (domLib_isIE50 || domLib_isIE55);
+// safari and konq may use string "khtml, like gecko", so check for destinctive /
+var domLib_isGecko = domLib_userAgent.indexOf('gecko/') != -1;
+var domLib_isMacIE = (domLib_isIE && domLib_isMac);
+var domLib_isIE55up = domLib_isIE5up && !domLib_isIE50 && !domLib_isMacIE;
+var domLib_isIE6up = domLib_isIE55up && !domLib_isIE55;
+
+// -- Browser Abilities --
+var domLib_standardsMode = (document.compatMode && document.compatMode == 'CSS1Compat');
+var domLib_useLibrary = (domLib_isOpera7up || domLib_isKHTML || domLib_isIE5up || domLib_isGecko || domLib_isMacIE || document.defaultView);
+// fixed in Konq3.2
+var domLib_hasBrokenTimeout = (domLib_isMacIE || (domLib_isKonq && domLib_userAgent.match(/konqueror\/3.([2-9])/) == null));
+var domLib_canFade = (domLib_isGecko || domLib_isIE || domLib_isSafari || domLib_isOpera);
+var domLib_canDrawOverSelect = (domLib_isMac || domLib_isOpera || domLib_isGecko);
+var domLib_canDrawOverFlash = (domLib_isMac || domLib_isWin);
+
+// -- Event Variables --
+var domLib_eventTarget = domLib_isIE ? 'srcElement' : 'currentTarget';
+var domLib_eventButton = domLib_isIE ? 'button' : 'which';
+var domLib_eventTo = domLib_isIE ? 'toElement' : 'relatedTarget';
+var domLib_stylePointer = domLib_isIE ? 'hand' : 'pointer';
+// NOTE: a bug exists in Opera that prevents maxWidth from being set to 'none', so we make it huge
+var domLib_styleNoMaxWidth = domLib_isOpera ? '10000px' : 'none';
+var domLib_hidePosition = '-1000px';
+var domLib_scrollbarWidth = 14;
+var domLib_autoId = 1;
+var domLib_zIndex = 100;
+
+// -- Detection --
+var domLib_collisionElements;
+var domLib_collisionsCached = false;
+
+var domLib_timeoutStateId = 0;
+var domLib_timeoutStates = new Hash();
+
+// }}}
+// {{{ DOM enhancements
+
+if (!document.ELEMENT_NODE)
+{
+	document.ELEMENT_NODE = 1;
+	document.ATTRIBUTE_NODE = 2;
+	document.TEXT_NODE = 3;
+	document.DOCUMENT_NODE = 9;
+	document.DOCUMENT_FRAGMENT_NODE = 11;
+}
+
+function domLib_clone(obj)
+{
+	var copy = {};
+	for (var i in obj)
+	{
+		var value = obj[i];
+		try
+		{
+			if (value != null && typeof(value) == 'object' && value != window && !value.nodeType)
+			{
+				copy[i] = domLib_clone(value);
+			}
+			else
+			{
+				copy[i] = value;
+			}
+		}
+		catch(e)
+		{
+			copy[i] = value;
+		}
+	}
+
+	return copy;
+}
+
+// }}}
+// {{{ class Hash()
+
+function Hash()
+{
+	this.length = 0;
+	this.numericLength = 0; 
+	this.elementData = [];
+	for (var i = 0; i < arguments.length; i += 2)
+	{
+		if (typeof(arguments[i + 1]) != 'undefined')
+		{
+			this.elementData[arguments[i]] = arguments[i + 1];
+			this.length++;
+			if (arguments[i] == parseInt(arguments[i])) 
+			{
+				this.numericLength++;
+			}
+		}
+	}
+}
+
+// using prototype as opposed to inner functions saves on memory 
+Hash.prototype.get = function(in_key)
+{
+	if (typeof(this.elementData[in_key]) != 'undefined') {
+		return this.elementData[in_key];
+	}
+
+	return null;
+}
+
+Hash.prototype.set = function(in_key, in_value)
+{
+	if (typeof(in_value) != 'undefined')
+	{
+		if (typeof(this.elementData[in_key]) == 'undefined')
+		{
+			this.length++;
+			if (in_key == parseInt(in_key)) 
+			{
+				this.numericLength++;
+			}
+		}
+
+		return this.elementData[in_key] = in_value;
+	}
+
+	return false;
+}
+
+Hash.prototype.remove = function(in_key)
+{
+	var tmp_value;
+	if (typeof(this.elementData[in_key]) != 'undefined')
+	{
+		this.length--;
+		if (in_key == parseInt(in_key)) 
+		{
+			this.numericLength--;
+		}
+
+		tmp_value = this.elementData[in_key];
+		delete this.elementData[in_key];
+	}
+
+	return tmp_value;
+}
+
+Hash.prototype.size = function()
+{
+	return this.length;
+}
+
+Hash.prototype.has = function(in_key)
+{
+	return typeof(this.elementData[in_key]) != 'undefined';
+}
+
+Hash.prototype.find = function(in_obj)
+{
+	for (var tmp_key in this.elementData) 
+	{
+		if (this.elementData[tmp_key] == in_obj) 
+		{
+			return tmp_key;
+		}
+	}
+
+	return null;
+}
+
+Hash.prototype.merge = function(in_hash)
+{
+	for (var tmp_key in in_hash.elementData) 
+	{
+		if (typeof(this.elementData[tmp_key]) == 'undefined') 
+		{
+			this.length++;
+			if (tmp_key == parseInt(tmp_key)) 
+			{
+				this.numericLength++;
+			}
+		}
+
+		this.elementData[tmp_key] = in_hash.elementData[tmp_key];
+	}
+}
+
+Hash.prototype.compare = function(in_hash)
+{
+	if (this.length != in_hash.length) 
+	{
+		return false;
+	}
+
+	for (var tmp_key in this.elementData) 
+	{
+		if (this.elementData[tmp_key] != in_hash.elementData[tmp_key]) 
+		{
+			return false;
+		}
+	}
+	
+	return true;
+}
+
+// }}}
+// {{{ domLib_isDescendantOf()
+
+function domLib_isDescendantOf(in_object, in_ancestor, in_bannedTags)
+{
+	if (in_object == null)
+	{
+		return false;
+	}
+
+	if (in_object == in_ancestor)
+	{
+		return true;
+	}
+
+	if (typeof(in_bannedTags) != 'undefined' &&
+		(',' + in_bannedTags.join(',') + ',').indexOf(',' + in_object.tagName + ',') != -1)
+	{
+		return false;
+	}
+
+	while (in_object != document.documentElement)
+	{
+		try
+		{
+			if ((tmp_object = in_object.offsetParent) && tmp_object == in_ancestor)
+			{
+				return true;
+			}
+			else if ((tmp_object = in_object.parentNode) == in_ancestor)
+			{
+				return true;
+			}
+			else
+			{
+				in_object = tmp_object;
+			}
+		}
+		// in case we get some wierd error, assume we left the building
+		catch(e)
+		{
+			return false;
+		}
+	}
+
+	return false;
+}
+
+// }}}
+// {{{ domLib_detectCollisions()
+
+/**
+ * For any given target element, determine if elements on the page
+ * are colliding with it that do not obey the rules of z-index.
+ */
+function domLib_detectCollisions(in_object, in_recover, in_useCache)
+{
+	// the reason for the cache is that if the root menu is built before
+	// the page is done loading, then it might not find all the elements.
+	// so really the only time you don't use cache is when building the
+	// menu as part of the page load
+	if (!domLib_collisionsCached)
+	{
+		var tags = [];
+
+		if (!domLib_canDrawOverFlash)
+		{
+			tags[tags.length] = 'object';
+		}
+
+		if (!domLib_canDrawOverSelect)
+		{
+			tags[tags.length] = 'select';
+		}
+
+		domLib_collisionElements = domLib_getElementsByTagNames(tags, true);
+		domLib_collisionsCached = in_useCache;
+	}
+
+	// if we don't have a tip, then unhide selects
+	if (in_recover)
+	{
+		for (var cnt = 0; cnt < domLib_collisionElements.length; cnt++)
+		{
+			var thisElement = domLib_collisionElements[cnt];
+
+			if (!thisElement.hideList)
+			{
+				thisElement.hideList = new Hash();
+			}
+
+			thisElement.hideList.remove(in_object.id);
+			if (!thisElement.hideList.length)
+			{
+				domLib_collisionElements[cnt].style.visibility = 'visible';
+				if (domLib_isKonq)
+				{
+					domLib_collisionElements[cnt].style.display = '';
+				}
+			}
+		}
+
+		return;
+	}
+	else if (domLib_collisionElements.length == 0)
+	{
+		return;
+	}
+
+	// okay, we have a tip, so hunt and destroy
+	var objectOffsets = domLib_getOffsets(in_object);
+
+	for (var cnt = 0; cnt < domLib_collisionElements.length; cnt++)
+	{
+		var thisElement = domLib_collisionElements[cnt];
+
+		// if collision element is in active element, move on
+		// WARNING: is this too costly?
+		if (domLib_isDescendantOf(thisElement, in_object))
+		{
+			continue;
+		}
+
+		// konqueror only has trouble with multirow selects
+		if (domLib_isKonq &&
+			thisElement.tagName == 'SELECT' &&
+			(thisElement.size <= 1 && !thisElement.multiple))
+		{
+			continue;
+		}
+
+		if (!thisElement.hideList)
+		{
+			thisElement.hideList = new Hash();
+		}
+
+		var selectOffsets = domLib_getOffsets(thisElement); 
+		var center2centerDistance = Math.sqrt(Math.pow(selectOffsets.get('leftCenter') - objectOffsets.get('leftCenter'), 2) + Math.pow(selectOffsets.get('topCenter') - objectOffsets.get('topCenter'), 2));
+		var radiusSum = selectOffsets.get('radius') + objectOffsets.get('radius');
+		// the encompassing circles are overlapping, get in for a closer look
+		if (center2centerDistance < radiusSum)
+		{
+			// tip is left of select
+			if ((objectOffsets.get('leftCenter') <= selectOffsets.get('leftCenter') && objectOffsets.get('right') < selectOffsets.get('left')) ||
+			// tip is right of select
+				(objectOffsets.get('leftCenter') > selectOffsets.get('leftCenter') && objectOffsets.get('left') > selectOffsets.get('right')) ||
+			// tip is above select
+				(objectOffsets.get('topCenter') <= selectOffsets.get('topCenter') && objectOffsets.get('bottom') < selectOffsets.get('top')) ||
+			// tip is below select
+				(objectOffsets.get('topCenter') > selectOffsets.get('topCenter') && objectOffsets.get('top') > selectOffsets.get('bottom')))
+			{
+				thisElement.hideList.remove(in_object.id);
+				if (!thisElement.hideList.length)
+				{
+					thisElement.style.visibility = 'visible';
+					if (domLib_isKonq)
+					{
+						thisElement.style.display = '';
+					}
+				}
+			}
+			else
+			{
+				thisElement.hideList.set(in_object.id, true);
+				thisElement.style.visibility = 'hidden';
+				if (domLib_isKonq)
+				{
+					thisElement.style.display = 'none';
+				}
+			}
+		}
+	}
+}
+
+// }}}
+// {{{ domLib_getOffsets()
+
+function domLib_getOffsets(in_object, in_preserveScroll)
+{
+	if (typeof(in_preserveScroll) == 'undefined') {
+		in_preserveScroll = false;
+	}
+
+	var originalObject = in_object;
+	var originalWidth = in_object.offsetWidth;
+	var originalHeight = in_object.offsetHeight;
+	var offsetLeft = 0;
+	var offsetTop = 0;
+
+	while (in_object)
+	{
+		offsetLeft += in_object.offsetLeft;
+		offsetTop += in_object.offsetTop;
+		in_object = in_object.offsetParent;
+		// consider scroll offset of parent elements
+		if (in_object && !in_preserveScroll)
+		{
+			offsetLeft -= in_object.scrollLeft;
+			offsetTop -= in_object.scrollTop;
+		}
+	}
+
+	// MacIE misreports the offsets (even with margin: 0 in body{}), still not perfect
+	if (domLib_isMacIE) {
+		offsetLeft += 10;
+		offsetTop += 10;
+	}
+
+	return new Hash(
+		'left',		offsetLeft,
+		'top',		offsetTop,
+		'right',	offsetLeft + originalWidth,
+		'bottom',	offsetTop + originalHeight,
+		'leftCenter',	offsetLeft + originalWidth/2,
+		'topCenter',	offsetTop + originalHeight/2,
+		'radius',	Math.max(originalWidth, originalHeight) 
+	);
+}
+
+// }}}
+// {{{ domLib_setTimeout()
+
+function domLib_setTimeout(in_function, in_timeout, in_args)
+{
+	if (typeof(in_args) == 'undefined')
+	{
+		in_args = [];
+	}
+
+	if (in_timeout == -1)
+	{
+		// timeout event is disabled
+		return 0;
+	}
+	else if (in_timeout == 0)
+	{
+		in_function(in_args);
+		return 0;
+	}
+
+	// must make a copy of the arguments so that we release the reference
+	var args = domLib_clone(in_args);
+
+	if (!domLib_hasBrokenTimeout)
+	{
+		return setTimeout(function() { in_function(args); }, in_timeout);
+	}
+	else
+	{
+		var id = domLib_timeoutStateId++;
+		var data = new Hash();
+		data.set('function', in_function);
+		data.set('args', args);
+		domLib_timeoutStates.set(id, data);
+
+		data.set('timeoutId', setTimeout('domLib_timeoutStates.get(' + id + ').get(\'function\')(domLib_timeoutStates.get(' + id + ').get(\'args\')); domLib_timeoutStates.remove(' + id + ');', in_timeout));
+		return id;
+	}
+}
+
+// }}}
+// {{{ domLib_clearTimeout()
+
+function domLib_clearTimeout(in_id)
+{
+	if (!domLib_hasBrokenTimeout)
+	{
+		if (in_id > 0) {
+			clearTimeout(in_id);
+		}
+	}
+	else
+	{
+		if (domLib_timeoutStates.has(in_id))
+		{
+			clearTimeout(domLib_timeoutStates.get(in_id).get('timeoutId'))
+			domLib_timeoutStates.remove(in_id);
+		}
+	}
+}
+
+// }}}
+// {{{ domLib_getEventPosition()
+
+function domLib_getEventPosition(in_eventObj)
+{
+	var eventPosition = new Hash('x', 0, 'y', 0, 'scrollX', 0, 'scrollY', 0);
+
+	// IE varies depending on standard compliance mode
+	if (domLib_isIE)
+	{
+		var doc = (domLib_standardsMode ? document.documentElement : document.body);
+		// NOTE: events may fire before the body has been loaded
+		if (doc)
+		{
+			eventPosition.set('x', in_eventObj.clientX + doc.scrollLeft);
+			eventPosition.set('y', in_eventObj.clientY + doc.scrollTop);
+			eventPosition.set('scrollX', doc.scrollLeft);
+			eventPosition.set('scrollY', doc.scrollTop);
+		}
+	}
+	else
+	{
+		eventPosition.set('x', in_eventObj.pageX);
+		eventPosition.set('y', in_eventObj.pageY);
+		eventPosition.set('scrollX', in_eventObj.pageX - in_eventObj.clientX);
+		eventPosition.set('scrollY', in_eventObj.pageY - in_eventObj.clientY);
+	}
+
+	return eventPosition;
+}
+
+// }}}
+// {{{ domLib_cancelBubble()
+
+function domLib_cancelBubble(in_event)
+{
+	var eventObj = in_event ? in_event : window.event;
+	eventObj.cancelBubble = true;
+}
+
+// }}}
+// {{{ domLib_getIFrameReference()
+
+function domLib_getIFrameReference(in_frame)
+{
+	if (domLib_isGecko || domLib_isIE)
+	{
+		return in_frame.frameElement;
+	}
+	else
+	{
+		// we could either do it this way or require an id on the frame
+		// equivalent to the name
+		var name = in_frame.name;
+		if (!name || !in_frame.parent)
+		{
+			return null;
+		}
+
+		var candidates = in_frame.parent.document.getElementsByTagName('iframe');
+		for (var i = 0; i < candidates.length; i++)
+		{
+			if (candidates[i].name == name)
+			{
+				return candidates[i];
+			}
+		}
+
+		return null;
+	}
+}
+
+// }}}
+// {{{ domLib_getElementsByClass()
+
+function domLib_getElementsByClass(in_class)
+{
+	var elements = domLib_isIE5 ? document.all : document.getElementsByTagName('*');	
+	var matches = [];	
+	var cnt = 0;
+	for (var i = 0; i < elements.length; i++)
+	{
+		if ((" " + elements[i].className + " ").indexOf(" " + in_class + " ") != -1)
+		{
+			matches[cnt++] = elements[i];
+		}
+	}
+
+	return matches;
+}
+
+// }}}
+// {{{ domLib_getElementsByTagNames()
+
+function domLib_getElementsByTagNames(in_list, in_excludeHidden)
+{
+	var elements = [];
+	for (var i = 0; i < in_list.length; i++)
+	{
+		var matches = document.getElementsByTagName(in_list[i]);
+		for (var j = 0; j < matches.length; j++)
+		{
+			// skip objects that have nested embeds, or else we get "flashing"
+			if (matches[j].tagName == 'OBJECT' && domLib_isGecko)
+			{
+				var kids = matches[j].childNodes;
+				var skip = false;
+				for (var k = 0; k < kids.length; k++)
+				{
+					if (kids[k].tagName == 'EMBED')
+					{
+						skip = true;
+						break;
+					}
+				}
+				if (skip) continue;
+			}
+
+			if (in_excludeHidden && domLib_getComputedStyle(matches[j], 'visibility') == 'hidden')
+			{
+				continue;
+			}
+
+			elements[elements.length] = matches[j];	
+		}
+	}
+
+	return elements;
+}
+
+// }}}
+// {{{ domLib_getComputedStyle()
+
+function domLib_getComputedStyle(in_obj, in_property)
+{
+	if (domLib_isIE)
+	{
+		var humpBackProp = in_property.replace(/-(.)/, function (a, b) { return b.toUpperCase(); });
+		return eval('in_obj.currentStyle.' + humpBackProp);
+	}
+	// getComputedStyle() is broken in konqueror, so let's go for the style object
+	else if (domLib_isKonq)
+	{
+		//var humpBackProp = in_property.replace(/-(.)/, function (a, b) { return b.toUpperCase(); });
+		return eval('in_obj.style.' + in_property);
+	}
+	else
+	{
+		return document.defaultView.getComputedStyle(in_obj, null).getPropertyValue(in_property);
+	}
+}
+
+// }}}
+// {{{ makeTrue()
+
+function makeTrue()
+{
+	return true;
+}
+
+// }}}
+// {{{ makeFalse()
+
+function makeFalse()
+{
+	return false;
+}
+
+// }}}