/**
	 * 一些常用的函式
	 * @author ShenTing Lin
	 * @since 2003-01-09
	 * @version $Id: common.js,v 1.8 2004/09/30 03:21:10 lst Exp $
	 **/

	/**
	 * checkbox 的選取動作
	 * @pram string objName 指定在哪個物件上，不指定則預設在 document 上
	 * @pram integer actType 選取的動作
	 *     1. 0: 全部取消
	 *     2. 1: 全部選取
	 *     3. 2: 反向選取
	 * @return integer 錯誤編號
	 *     1. 0: 沒有錯誤
	 *     2. 1: 找不到指定的物件
	 *     3. 2: 找不到任何的 input 物件
	 * @access public
	 *
	 * 其它說明：新增一項屬性 exclude：在 input 中若有設定這項屬性，則程式會忽略該物件
	 * 例如：
	 *     以下的例子，本程式將會忽略該物件
	 *
	 *         <input type="checkbox" exclude> or
	 *         <input type="checkbox" exclude="true"> (建議)
	 *
	 *     而以下的例子，該物件會依指定的動作而有所動作
	 *
	 *         <input type="checkbox"> (建議) or
	 *         <input type="checkbox" exclude="false">
	 **/
	function select_func(objName, actType) {
		var obj = null, nodes = null, attr = null;
		var cnt = 0;
		var isSel = false;

		if (typeof(actType) == "boolean") {
			actType = actType ? 1 : 0;
		}
		obj = (objName == "") ? document : document.getElementById(objName);
		if ((typeof(obj) != "object") || (obj == null)) return 1;
		nodes = obj.getElementsByTagName("input");
		if ((nodes == null) || (nodes.length <= 0)) return 2;
		cnt = nodes.length;
		if (parseInt(actType) < 2) {
			// 全選或全消 (select all or cancel select)
			isSel = (actType > 0) ? true : false;
			for (var i = 0; i < cnt; i++) {
				if (nodes[i].type == "checkbox") {
					attr = nodes[i].getAttribute("exclude");
					if ((attr == null) || (attr == "false"))
						nodes[i].checked = isSel;
				}
			}
		} else {
			// 反向選取 (inverse select)
			for (var i = 0; i < cnt; i++) {
				if (nodes[i].type == "checkbox") {
					attr = nodes[i].getAttribute("exclude");
					if ((attr == null) || (attr == "false"))
						nodes[i].checked = !nodes[i].checked;
				}
			}
		}
		return 0;
	}

////////////////////////////////////////////////////////////////////////////////
	// 檢查瀏覽器 (check browser)
	if ((typeof(isIE) == "undefined") || (typeof(isMz) == "undefined")) {
		var isIE = false, isMZ = false;
		var re = new RegExp("MSIE","ig");
		if (re.test(navigator.userAgent)) {
			isIE = true;
		}

		re = new RegExp("Gecko","ig");
		if (re.test(navigator.userAgent)) {
			isMZ = true;
		}
	}

	/**
	 * 給 IE 呼叫用的 (for IE)
	 **/
	function showDialogIE(uri, modal, argument, opCenter, opTop, opLeft, opWidth, opHeight, opExtra) {
		var strFace = "";
		var aryFace = new Array();
		var ieDialog = null;

		if (opCenter) {
			aryFace[aryFace.length] = "center=yes";
		} else {
			aryFace[aryFace.length] = "center=no";
			aryFace[aryFace.length] = "dialogTop="  + opTop;
			aryFace[aryFace.length] = "dialogLeft=" + opLeft;
		}

		aryFace[aryFace.length] = "help=no";
		aryFace[aryFace.length] = "dialogWidth="  + opWidth;
		aryFace[aryFace.length] = "dialogHeight=" + opHeight;
		aryFace[aryFace.length] = opExtra;
		strFace = aryFace.toString();
		strFace = strFace.replace(/,/ig, ';', strFace);
		strFace = strFace.replace(/ /ig, '', strFace);
		strFace = strFace.replace(/;;/ig, ';', strFace);
		
		if (modal) {
			ieDialog = window.showModalDialog(uri, argument, strFace);
		} else {
			ieDialog = window.showModelessDialog(uri, argument, strFace);
		}
		return ieDialog;
	}

	/**
	 * 給 Mozilla 呼叫用的 (for Mozilla)
	 **/
	var mzDialog    = null;
	var mzDialogCnt = Math.ceil(Math.random() * 100000);
	function showDialogMZ(uri, modal, argument, opCenter, opTop, opLeft, opWidth, opHeight, opExtra) {
		var strFace = "";
		var aryFace = new Array();
		var oT = 0, oL = 0;

		if (opCenter) {
			oT = parseInt(parseInt(window.outerHeight) / 2) - parseInt(parseInt(opHeight) / 2);
			oL = parseInt(parseInt(window.outerWidth) / 2) - parseInt(parseInt(opWidth) / 2);
			oT = oT + parseInt(window.screenY);
			oL = oL + parseInt(window.screenX);
			aryFace[aryFace.length] = "top="  + oT + "px";
			aryFace[aryFace.length] = "left=" + oL + "px";
		} else {
			aryFace[aryFace.length] = "top="  + opTop;
			aryFace[aryFace.length] = "left=" + opLeft;
		}

		aryFace[aryFace.length] = "toolbar=0";
		aryFace[aryFace.length] = "menubar=0";
		aryFace[aryFace.length] = "dependent=1";
		aryFace[aryFace.length] = "dialog=1";
		aryFace[aryFace.length] = (modal) ? "modal=1" : "modal=0";
		aryFace[aryFace.length] = "width="  + opWidth;
		aryFace[aryFace.length] = "height=" + opHeight;
		aryFace[aryFace.length] = opExtra;

		strFace = aryFace.toString();
		strFace = strFace.replace(/;/ig, ",", strFace);
		strFace = strFace.replace(/ /ig, "", strFace);
		strFace = strFace.replace(/,,/ig, ",", strFace);

		mzDialog = window.open(uri, "mzDialog" + mzDialogCnt, strFace);
		mzDialog.dialogArguments = argument;
		if (modal) {
			if ((mzDialog != null) && !mzDialog.closed) {
				window.onfocus = function () { mzDialog.focus(); };
			}
			return mzDialog.returnValue;
		} else {
			window.onfocus = function () {};
			mzDialogCnt = Math.ceil(Math.random() * 100000);
			return mzDialog;
		}
	}

	/**
	 * 共通呼叫介面
	 *
	 *     在這一部分 IE 還有一個介面參數 help，這會在標題列上顯示一個問號。
	 *     但是，由於 Mozilla 沒有支援，所以直接將它設為關閉，其實這也是沒有多大作用
	 *
	 * @param string  uri      : 要開啟的網址
	 * @param boolean modal    : 開啟的視窗類型
	 *     true  : modal
	 *     false : modeless
	 * @param any     argument : 要傳遞給 dialog 的資料
	 * @param boolean opCenter : 是否置中
	 *     true  : 置中
	 *     false : 自行指定
	 * @param string  opTop    : 視窗在桌面上的頂端位置
	 * @param string  opLeft   : 視窗在桌面上的左端位置
	 * @param string  opWidth  : 視窗的寬度
	 * @param string  opHeight : 視窗的高度
	 * @param string  opExtra  : 其他屬性
	 *     status     = 1, 0 (1: 顯示, 0: 隱藏)
	 *     resizeable = 1, 0 (1: 可  , 0: 不可)
	 * @return
	 **/
	function showDialog(uri, modal, argument, opCenter, opTop, opLeft, opWidth, opHeight, opExtra) {
		var oW = 0, oH = 0;
		// 建立預設的長寬 (default width and height)
		oW = parseInt(opWidth);
		oW = (isNaN(oW) || (oW == 0)) ? "200px" : oW + "px";
		oH = parseInt(opHeight);
		oH = (isNaN(oH) || (oH == 0)) ? "200px" : oH + "px";
		if (isIE) return showDialogIE(uri, modal, argument, opCenter, opTop, opLeft, opWidth, opHeight, opExtra);
		if (isMZ) return showDialogMZ(uri, modal, argument, opCenter, opTop, opLeft, opWidth, opHeight, opExtra);
	}