base.js

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/**
* 获得浏览器类型
*/
function Browser() {

  var ua, s, i;
  this.isIE    = false;  // Internet Explorer
  this.isOP    = false;  // Opera
  this.isNS    = false;  // Netscape
  this.version = null;
  ua = navigator.userAgent;

  s = "Opera";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isOP = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }

  s = "MSIE";
  if ((i = ua.indexOf(s))) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }
}

var browser = new Browser();


Object.extend(Event, {

  addEvent : function (obj,eventName,eventFunc) {
		if(obj.attachEvent) {
      obj.attachEvent(eventName,eventFunc);
    }else if(obj.addEventListener){
     eventName = eventName.toString().replace(/on(.*)/i,'$1');
     obj.addEventListener(eventName,eventFunc, false);
    }
    return eventFunc;
  },

  delEvent : function (obj,eventName,eventFunc) {
   if(obj.detachEvent)
    obj.detachEvent(eventName,eventFunc)
   else if(obj.removeEventListener){
     eventName = eventName.toString().replace(/on(.*)/i,'$1');
     obj.removeEventListener(eventName,eventFunc, false);
   }
    return eventFunc;
  },

  getEvent : function () {
    //获取Event
    return window.event ? window.event : (function (o) {
    do {
      o = o.caller;
    } while (o && !/^\[object[ A-Za-z]*Event\]$/.test(o.arguments[0]));
        return o.arguments[0];
      })(this.getEvent);
    }
  }
);

/**
* 表单提交
*/
function formSubmit(forumId,button){
  if (button){
    button.disabled="true";
  }
  document.getElementById(forumId).submit();

}

/**
* 表单提交
*/
function submit(forumId){

  document.getElementById(forumId).submit();

}

/**
* 表单清除
*/
function formReset(forumId){
  document.getElementById(forumId).reset();
}

function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}

/**
* 获得事件操作对象
*/
function getEventSrcElement(event){
  var obj;
  if (browser.isIE)
    obj = window.event.srcElement;
  else
    obj = event.currentTarget;
  return obj;
}

/**
* 获得鼠标移向目标
*/
function getEventToElement(event){
  var el;
  if (browser.isIE)
    el = window.event.toElement;
  else if (event.relatedTarget != null)
    el = (event.relatedTarget.tagName ? event.relatedTarget : event.relatedTarget.parentNode);
  return el;
}

function getOffset(el) {
		var width = el.offsetWidth;
		var height = el.offsetHeight;
    if (browser.isNS) {
        height -= parseInt(el.style.borderTopWidth) * 2;
    }
		var top = 0;
		var left = 0;
		while(el != null){
			top += el["offsetTop"];
			left += el["offsetLeft"];
			if (browser.isIE && el.offsetParent != null && el.offsetParent.tagName == "BODY"){
				left += (el.offsetWidth - el.clientWidth)/2
			}
			el = el.offsetParent;
		}
		

    return {"top":top, "left":left, "width":width, "height":height};
};

/**
* 获得指定对象相对于浏览器的绝对定位
*/
function getAbsolutePosition(obj){
  var top = obj.offsetTop;
  var left = obj.offsetLeft;
  var width=obj.offsetWidth;
  var height=obj.offsetHeight;
  while(obj.offsetParent){
      obj = obj.offsetParent;
      top += obj.offsetTop;
      left += obj.offsetLeft;
  }
  return {"top":top, "left":left, "width":width, "height":height};
}

/**
* 获得指定对象相对于最近一个relative 或者 absolute 对象的相对位置
*/
function getRelativePosition(obj) {
  var top=obj.offsetTop;
  var left=obj.offsetLeft;
  var width=obj.offsetWidth;
  var height=obj.offsetHeight;
  obj = obj.offsetParent
  while (obj) {
    var positionValue = Element.getStyle(obj, "position");
    var overflowValue = Element.getStyle(obj, "overflow");
    if ( positionValue == 'absolute' || positionValue == 'relative'  
            || ( overflowValue != 'visible' && overflowValue != '' ) ){ 
        break; 
    }  
    top += obj.offsetTop;
    left += obj.offsetLeft;
    obj = obj.offsetParent;
  }
  return {"top":top, "left":left, "width":width, "height": height};
}

/**
* 获得对象本身及外部 第一个tagName和className为指定值的对象
*/
function getContainerWith(node, tagName, className) {
  while (node != null) {
    if (node.tagName != null && node.tagName == tagName &&
        Element.hasClassName(node, className))
      return node;
    node = node.parentNode;
  }
  return node;
}

/**
* 获得指定对象的子对象的offsetWidth
*/
function getChildNodeWidth(el){
	var maxWidth = 0;
  if(el.childNodes){
    for(i=0;i<el.childNodes.length;i++){
      if(el.childNodes[i].offsetWidth){
        //return el.childNodes[i].offsetWidth;
				var w = Element.getWidth(el.childNodes[i]);
        if(w > maxWidth){
					maxWidth = w;
				}
      }
    }
		if(maxWidth!=0) return maxWidth;
  }
  return Element.getWidth(el);
}

/**
* 获取浏览器的有些屏幕相对坐标及大小
*/
function getBrowserOffset(){
  var top = 0;
  var left = 0;
  var width = 0;
  var height = 0;
  if (document.documentElement) {
    top = document.documentElement.scrollTop;
    left = document.documentElement.scrollLeft;
    width = document.documentElement.clientWidth;
    height = document.documentElement.clientHeight;
  }
  else if (document.body) {
    top =  document.body.scrollTop;
    left =  document.body.scrollLeft;
    width = document.body.clientWidth;
    height = document.body.clientHeight;
  }
  return {"top": top, "left": left, "width": width, "height": height};
}

/**
* 去字符串两端的空格
*/
function LTrim(s){
  for(var i=0;i<s.length;i++)
  if(s.charAt(i)!=' ')
    return s.substring(i,s.length);
  return "";
}

function RTrim(s){
   for(var i=s.length-1;i>=0;i--)
    if(s.charAt(i)!=' ')
    return s.substring(0,i+1);
    return "";
}
   
function Trim(s){
  return RTrim(LTrim(s));
}

/**
* 检查输入的页码是否正确
*/
function checkPageNo(obj, minPage, maxPage, pageMethod){ 
  try{
    var no = parseInt(obj.value);
    if(no >= minPage && no <= maxPage){
      eval(pageMethod + "(" + no + ");");
			return false;
    }
  }catch(e){
  }
  alert("请输入正确的页码");
	return false;
}

/**
* 获得列表中，选中状态的checkBox数量
*/
function getCheckedNum(name){
  var obj = document.getElementsByName(name);
  if (obj){
    var num = 0 ;
    if(obj.length == undefined){  
      if(obj.checked==true){
        num++;
      }
    }else{
      for(var i=0; i<obj.length; i++){
        if(obj[i].checked==true){
        isChecked = true;
        num++;
        }
      }
    }
    return num;
   }
  return 0;
}

/**
* 刷新验证码
*/
function newVerifyPic(contextPath,imgId){
  document.getElementById(imgId).src=contextPath + "/checkNum" + '?new=' + Math.random() ;
}

/**
* 展开(缩起)指定对象
*/
function expandContent(expandId){
  var obj  = document.getElementById(expandId);
  var display = Element.getStyle(obj, "display");
  var curr = getEventSrcElement(Event.getEvent());
  if(display != "none"){
    display = "none";
    if(curr.tagName == "IMG"){
      curr.src = curr.src.replace("_yes", "_no");
    }
  }else{
    display = "";
    if(curr.tagName == "IMG"){
      curr.src = curr.src.replace("_no", "_yes");
    }
  }

  obj.style.display = display;
}


/*================================下拉菜单功能=====================================*/
/**当前激活的按钮对象**/
var activePopMenu = new Array();
var activePopMenuId = null;
var activePopTimer = null;
var activePopInMenu = null;

/***
* event 鼠标事件
* buttonId 按钮对应的ID， 菜单选项对应的ID为  buttonId + "_Items"
* disWidth  宽度补丁， 如果出现上下滚动条，占一定的宽度，挡住一下文字，需要使用该参数来扩展
* directType   0  下拉菜单，如果下拉高度不够，会显示向上，如果右边宽度不够，会向左展现
*              1  横向菜单，自动向右拉伸。
*              2  向上菜单
*              3  横向菜单，自动向左拉伸
T M B
L C R

**/

function clearActivePopTimer(){
	if (activePopTimer != null){
		clearTimeout(activePopTimer);
		activePopTimer = null;
	}
}

function popMenu(buttonId, maxHeight, disWidth, directType, outHideMenu){
  //var button = $(buttonId);
  // Get the target button element.
	activePopInMenu = null;
	clearActivePopTimer();
	var pm;
	if(activePopMenu[buttonId] == null){
		pm = new Object();
		activePopMenu[buttonId] = pm;
	}else{
		pm = activePopMenu[buttonId];
	}
  pm.button = document.getElementById(buttonId);
  if(pm.menu == null){
    pm.menu = $(buttonId + "_Items");
    if(pm.menu==null) return;
		pm.maxHeight = maxHeight;
		pm.disWidth = disWidth;
		pm.directType = directType;
		if(outHideMenu && outHideMenu==true){
			pm.outHideMenu = true;
		}else{
			pm.outHideMenu = false;
		}
    initMenu(pm);
  }

  
  if(!pm.outHideMenu){
		Event.addEvent(pm.button, "onmouseout", hideMenu1);
	}

	//pm.button.blur();

  //alert(Event.addEvent);
  //button.attachEvent("onmouseout",hideMenu);

	if(activePopMenuId == buttonId){
		return;
	}
  

  if(activePopMenuId != buttonId){
		hideActiveMenu();
    showMenu(pm);
    activePopMenuId = buttonId;
  }else{
    hideActiveMenu();
  }
}

function initMenu(pm){
  var menu = pm.menu;
  
	if(!pm.outHideMenu){
		Event.addEvent(menu, "onmouseout", hideMenu);
	}

	Event.addEvent(menu, "onmouseenter", inMenu);
	Event.addEvent(menu, "onmouseover", inMenu);
  
  menu.style.position = "absolute";
  menu.style.display = "block";
	menu.style.visibility = "hidden";
  if(!pm.maxHeight){
    pm.maxHeight = 1000;
  }
  var menuWidth = getChildNodeWidth(menu);
  if(pm.disWidth){
    menuWidth += pm.disWidth;
  }
  
	var button = pm.button;
  if(button.offsetWidth > menuWidth){
		var borderWidth = 0;
		var borderLeftWidth = Element.getStyle(menu, "borderLeftWidth");
		if(borderLeftWidth && parseInt(borderLeftWidth)){
			borderWidth += parseInt(borderLeftWidth);
		}
		var borderRightWidth = Element.getStyle(menu, "borderRightWidth");
		if(borderRightWidth && parseInt(borderRightWidth)){
			borderWidth += parseInt(borderRightWidth);
		}
    menuWidth = button.offsetWidth - borderWidth;
  }

	
	
	var borderHeight = 0;
	var borderTopHeight = Element.getStyle(menu, "borderTopWidth");
	if(borderTopHeight && parseInt(borderTopHeight)){
		borderHeight += parseInt(borderTopHeight);