/*************************************
 author     : DK
 createDate : 2010.1.1
 editDate   : 2010.8.1,2010.8.16,2010.9.3,2010.9.10,2010.9.30, 2010.12.6, 2010.12.14, 2010.12.16, 2010.12.17
 blog       : http://www.dklogs.net
 email      : xiaobaov2@gmail.com
 *************************************/
(
		function() {
			if (!window.dk) {
				window['dk'] = {}
			}
			//根据ID获取对象
			function $() {
				if (typeof(arguments[0]) == 'string') {
					if (document.getElementById(arguments[0])) {
						return document.getElementById(arguments[0]);
					} else {
						throw "unknow element";
					}
				} else {
					return arguments[0];
				}
			}

			window.dk.$ = $;
			function $c(tagName) {
				return document.createElement(tagName);
			}

			window.dk.$c = $c;
			var browserMatch = window.dk.browserMatch = (function(ua) {
				ua = navigator.userAgent.toLowerCase();
				var match = /(webkit)[ \/]([\w.]+)/.exec(ua) || /(opera)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || /(msie) ([\w.]+)/.exec(ua) || !/compatible/.test(ua) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec(ua) || [];
				return { browser: match[1] || "", version: match[2] || "0" };
			})();
			window.dk.browser = {};
			if (browserMatch.browser) {
				window.dk.browser[browserMatch.browser] = true;
				window.dk.browser.version = browserMatch.version;
			}
			//根据Class名称获取对象
			function getElementsByClassName(className, tag, parent) {
				parent = parent || document;
				if (!(parent = $(parent))) {
					return false;
				}
				var allTags = (tag == '*' && parent.all) ? parent.all : parent.getElementsByTagName(tag);
				var matchingElements = new Array();
				className = className.replace(/\-/g, '\\-');
				var regex = new RegExp('(^|\\s)' + className + '(\\s|$)');
				var element;
				for (var i = 0,length = allTags.length; i < length; i++) {
					element = allTags[i];
					if (regex.test(element.className)) {
						matchingElements.push(element);
					}
				}
				return matchingElements;
			}

			window['dk']['getElementsByClassName'] = getElementsByClassName;
			/*
			 *绑定事件
			 */
			function addEvent(node, type, listener) {
				if (typeof(node) == 'string') {
					node = $(node);
				}
				if (!listener.$$guid) {
					listener.$$guid = addEvent.guid++;
				}
				if (!node.events) {
					node.events = {};
				}
				var handlers = node.events[type], isRegisted = !!node.events[type];
				if (!handlers) {
					handlers = node.events[type] = {};
				}
				handlers[listener.$$guid] = listener;
				if (!isRegisted) {
					if (node.addEventListener) {
						node.addEventListener(type, handleEvent, false);
					} else if (node.attachEvent) {
						var tempFunc = function() {
							handleEvent.call(node, window.event);
						};
						node.attachEvent('on' + type, tempFunc);
					} else {
						node['on' + type] = handleEvent;
					}
				}
			}

			addEvent.guid = 1;
			function removeEvent(node, type, handler) {
				if (node.events && node.events[type]) {
					delete node.events[type][handler.$$guid];
				}
			}

			function handleEvent(event) {
				var returnValue = true;
				event = event || window.event;
				event = fixEvent(event, this);
				var handlers = this.events[event.type];
				for (var i in handlers) {
					this.$$handleEvent = handlers[i];
					if (this.$$handleEvent(event) === false) {
						returnValue = false;
					}
				}
				return returnValue;
			}

			function fixEvent(event, currentTarget) {
				event.preventDefault || (event.preventDefault = fixEvent.preventDefault);
				event.stopPropagation || (event.stopPropagation = fixEvent.stopPropagation);
				event.target || (event.target = event.srcElement);
				event.currentTarget || (event.currentTarget = currentTarget);
				//event.x && (event.x = fixEvent.x);
				//event.y && (event.y = fixEvent.y);
				return event;
			}

			fixEvent.preventDefault = function() {
				this.returnValue = false;
			};
			fixEvent.stopPropagation = function() {
				this.cancelBubble = true;
			};
			window['dk']['addEvent'] = addEvent;
			window.dk.addEvent = addEvent;
			//移出绑定的事件
			window.dk.removeEvent = removeEvent;
			//绑定函数的执行对象
			function bind(targetObj, func) {
				var args = Array.prototype.slice.call(arguments).slice(2);
				return function() {
					return func.apply(targetObj, args.concat(Array.prototype.slice.call(arguments)));
				}
			}

			window['dk']['bind'] = bind;
			//检查childNode是被包含在parentNode中
			function contains(parentNode, childNode) {
				return parentNode.contains ? parentNode != childNode && parentNode.contains(childNode) : !!(parentNode.compareDocumentPosition(childNode) & 16);
			}

			window['dk']['contains'] = contains;
			//获取Event对象
			function getEvent(e) {
				return e || window.event;
			}

			window.dk.getEvent = getEvent;
			//停止冒泡
			function stopBubble(e) {
				getEvent(e).bubbles ? getEvent(e).stopPropagation() : getEvent(e).cancelBubble = true;
			}

			window['dk']['stopBubble'] = stopBubble;
			//恢复冒泡
			function startBubble(e) {
				getEvent(e).initEvent ? getEvent(e).initEvent() : getEvent(e).cancelBubble = false;
			}

			window['dk']['startBubble'] = startBubble;
			//检查mouseover和mouseout模式下取消事件派发
			function checkHover(e, target) {
				if (dk.getEvent(e).type == "mouseover") {
					return !contains(target, getEvent(e).relatedTarget || getEvent(e).fromElement) && !((getEvent(e).relatedTarget || getEvent(e).fromElement) === target);
				} else {
					return !contains(target, getEvent(e).relatedTarget || getEvent(e).toElement) && !((getEvent(e).relatedTarget || getEvent(e).toElement) === target);
				}
			}

			window['dk']['checkHover'] = checkHover;
			//获取事件触发的对象
			function getEventTarget(e) {
				return dk.getEvent(e).target || dk.getEvent(e).srcElement;
			}

			window['dk']['getEventTarget'] = getEventTarget;
			//获取窗口的大小
			function getBrowserSize() {
				var de = document.documentElement;
				return {
					width:(window.innerWidth || (de && de.clientWidth) || document.body.clientWidth),
					height:(window.innerHeight || (de && de.clientHeight) || document.body.clientHeight)}
			}

			window['dk']['getBrowserSize'] = getBrowserSize;
			//获取对象在页面中的位置，返回值为值类型
			function getPositionInDoc(target) {
				target = $(target)
				if (!target) {
					return null;
				}
				var left = 0, top = 0;
				do {
					left += target.offsetLeft || 0;
					top += target.offsetTop || 0;
					target = target.offsetParent;
				} while (target);
				return {
					left: left,
					top: top
				};
			}
			window['dk']['getPositionInDoc'] = getPositionInDoc;
			window.dk.pageDom = getPositionInDoc;
			//获取鼠标在Document中的位置，返回值为值类型
			function getMousePositionInDoc(e) {
				var scrollx, scrolly;
				if (typeof(window.pageXOffset) == 'number') {
					scrollx = window.pageXOffset;
					scrolly = window.pageYOffset;
				} else {
					scrollx = document.documentElement.scrollLeft;
					scrolly = document.documentElement.scrollTop;
				}
				return {
					x: e.clientX + scrollx,
					y: e.clientY + scrolly
				}
			}
			window['dk']['getMousePositionInDoc'] = getMousePositionInDoc;
			window['dk']['pageMouse'] = getMousePositionInDoc;
			//获取document的宽度和高度
			function getDocSize(){
				return {width: document.body.scrollWidth, height: document.body.scrollHeight};
			}
			window.dk.getDocSize = getDocSize;
			//获取滚动条的top 和 left
			function getScroll(){
				var scrollx, scrolly;
				if (typeof(window.pageXOffset) == 'number') {
					scrollx = window.pageXOffset;
					scrolly = window.pageYOffset;
				} else {
					scrollx = document.documentElement.scrollLeft;
					scrolly = document.documentElement.scrollTop;
				}
				return {left: scrollx, top: scrolly};
			}
			
			window.dk.getScroll = getScroll;
			
			window.dk.now = (function() {
				return new Date();
			})();
			function tagName(target) {
				return target.tagName.toLowerCase();
			}
			window.dk.tagName = tagName;
			//根据给定的范围返回随机数
			function ran(m, n) {
                return Math.floor((n-m+1)*Math.random()+m);
            }
			window.dk.ran = ran;
			//日志
			function myLogs(id) {
				id = id || 'defaultDebugLogs';
				var logsWindow = null;
				var initWindow = function() {
					logsWindow = document.createElement('ol');
					logsWindow.setAttribute('id', id);
					var winStyle = logsWindow.style;
					winStyle.position = 'fixed';
					winStyle.top = '10px';
					winStyle.right = '10px';
					winStyle.width = '300px';
					winStyle.height = '600px';
					winStyle.overflow = 'auto';
					winStyle.border = '1px solid #ccc';
					winStyle.background = '#fff';
					winStyle.padding = 0;
					winStyle.margin = 0;
					document.body.appendChild(logsWindow);
				};
				this.writeRow = function(message) {
					logsWindow || initWindow();
					var newItem = document.createElement('li');
					newItem.style.padding = '2px';
					newItem.style.margin = '0 0 1px 0';
					newItem.style.background = '#eee';
					if (typeof(message) == 'undefined') {
						newItem.innerHTML = '<span style=\"color:#f90;\">Message is undefined</span>';
					} else {
						newItem.innerHTML = message;
					}
					logsWindow.appendChild(newItem);
				};
			}

			myLogs.prototype = {
				write:function(message) {

					if (typeof(message) == 'string' && message.length == 0) {
						return this.writeRow('<span style=\"color:#900;\">warning:</span> empty message');
					}
					if (typeof(message) != 'string' && typeof(message) != 'undefined') {
						if (message.toString) return this.writeRow(message.toString()); else return this.writeRow(typeof(message));
					}
					if (typeof(message) == 'undefined') {
						return this.writeRow('<span style=\"color:#f90;\">Message is undefined</span>');
					}
					message = message.replace(/</g, "&lt;").replace(/</g, "&gt;");
					return this.writeRow(message);
				},
				header:function(message) {
					return this.writeRow(message);
				}
			};
			window.dk.logs = new myLogs('log');
			//Dom加载完成事件
			function ready(loadEvent) {
				var init = function() {
					if (arguments.callee.done)
						return;
					arguments.callee.done = true;
					loadEvent.apply(document, arguments);
				};

				if (document.addEventListener) {
					document.addEventListener('DOMContentLoaded', init, false);
				}

				if (/WebKit/i.test(navigator.userAgent)) {
					var _timer = setInterval(function() {
						if (/loaded|complete/.test(document.readyState)) {
							clearInterval(_timer);
							init();
						}
					}, 10)
				}


				/*@if(@_win32)*/
				document.write('<script id=__ie_onload defer src=javascript:void(0)><\/script>');
				var script = document.getElementById('__ie_onload');
				script.onreadystatechange = function() {
					if (this.readyState == 'complete') {
						init();
					}
				};
				/*@end @*/
				return true;
			}

			window['dk']['ready'] = ready;

			function trim(str) {
				return (str || "").replace(/^(\s|\u00A0)+|(\s|\u00A0)+$/g, "");
			}
			window['dk']['trim'] = trim;
			
			//继承
			function extend(parent, child, methords){
				throw "TODO";
			}
			
		})();

var _$ = function(node) {
	if (typeof(node) == 'string') {
		node = dk.$(node);
	}
	this.node = node;
};
_$.prototype = {
	fixover:function(func) {
		dk.addEvent(this.node, 'mouseover', function(e) {
			if (dk.checkHover(e, this)) {
				func(e);
			}
		});
		return this;
	},
	fixout:function(func) {
		dk.addEvent(this.node, 'mouseout', function(e) {
			if (dk.checkHover(e, this)) {
				func(e);
			}
		});
		return this;
	},
	css:function(style, value) {//三个重载方法
		var argNum = arguments.length;
		if (argNum == 1 && typeof(arguments[0]) == 'string') {//按照参数中的样式表的样式名称获取样式的值
			return this.getCss(arguments[0]);
		} else if (argNum == 1 && typeof(arguments[0]) == 'object') {//按照参数中的Json对象设置样式
			var styles = arguments[0];
			for (var i in styles) {
				this.setCss(i, styles[i]);
			}
		} else if (argNum == 2) {//按照参数中的样式名称和值对指定样式进行设置
			this.setCss(arguments[0], arguments[1]);
		}
		return this;
	},
	getCss:function(styleName) {
		var value;
		if (this.node.currentStyle) {
			value = this.node.currentStyle[styleName];
			if (value == 'auto' && styleName == 'width') {
				value = this.node.clientWidth;
			}
			if (value == 'auto' && styleName == 'height') {
				value = this.node.clientHeight;
			}
			return value;
		} else if (window.getComputedStyle) {
			value = window.getComputedStyle(this.node, null).getPropertyValue(this.getSplitName(styleName));
			return value;
		}
	},
	width:function() {
		return this.node.offsetWidth;
	},
	height:function() {
		return this.node.offsetHeight;
	},
	setCss:function(styleName, value) {
		if (styleName == 'opacity' && document.body.filters) {
			this.node.style.filter = 'alpha(opacity=' + (parseFloat(value) * 100) + ')';
			return;
		}
		this.node.style[this.getCamelName(styleName)] = value;
	},
	getSplitName:function(styleName) {
		return styleName.replace(/([A-Z])/g, '-$1').toLowerCase();
	},
	getCamelName:function(style_name) {
		return style_name.replace(/-([a-z])/g, function(targetStr) {
			return targetStr.slice(1).toUpperCase();
		});
	},
	addClass:function(value) {
		var classNames = (value || '').split(/\s+/);
		if (this.node.className) {
			var className = ' ' + this.node.className + ' ', setClass = this.node.className;
			for (var i = 0, len = classNames.length; i < len; i++) {
				if (className.indexOf(' ' + classNames[i] + ' ') < 0) {
					setClass += ' ' + classNames[i];
				}
			}
			this.node.className = dk.trim(setClass);
		} else {
			this.node.className = value;
		}
	},
	removeClass:function(value) {
		var classNames = (value || '').split(/\s+/);
		if (this.node.className) {
			if (value) {
				var className = (' ' + this.node.className + ' ').replace(/[\n\t]/g, ' ');
				for (var i = 0, len = classNames.length; i < len; i++) {
					className = className.replace(' ' + classNames[i] + ' ', ' ');
				}
				this.node.className = dk.trim(className);
			} else {
				this.node.className = '';
			}
		}
	},
	hasClass: function(value) {
		return this.node.className.indexOf(value) > -1;
	}
};
$$ = function(node) {
	return new _$(node);
};