/*
	[UCenter Home] (C) 2007-2008 Comsenz Inc.
	$Id: script_common.js 7381 2008-05-16 05:41:58Z lifangming $
*/

var userAgent = navigator.userAgent.toLowerCase();
var is_opera = userAgent.indexOf('opera') != -1 && opera.version();
var is_moz = (navigator.product == 'Gecko') && userAgent.substr(userAgent.indexOf('firefox') + 8, 3);
var is_ie = (userAgent.indexOf('msie') != -1 && !is_opera) && userAgent.substr(userAgent.indexOf('msie') + 5, 3);

function $(id) {
	return document.getElementById(id);
}

function addSort(obj) {
	if (obj.value == 'addoption') {
 	var newOptDiv = document.createElement('div')
 	newOptDiv.id = obj.id+'_menu';
 	newOptDiv.innerHTML = '<h1>添加</h1><a href="javascript:;" onclick="addOption(\'newsort\', \''+obj.id+'\')" class="float_del">刪除</a><div class="popupmenu_inner" style="text-align: center;">名稱：<input type="text" name="newsort" size="10" id="newsort" class="t_input" /><input type="button" name="addSubmit" value="創建" onclick="addOption(\'newsort\', \''+obj.id+'\')" class="button" /></div>';
 	newOptDiv.className = 'popupmenu_centerbox';
 	newOptDiv.style.cssText = 'position: absolute; left: 50%; top: 200px; width: 400px; margin-left: -200px;';
 	document.body.appendChild(newOptDiv);
 	$('newsort').focus();
 	}
}
	
function addOption(sid, aid) {
	var obj = $(aid);
	var newOption = $(sid).value;
	$(sid).value = "";
	if (newOption!=null && newOption!='') {
		var newOptionTag=document.createElement('option');
		newOptionTag.text=newOption;
		newOptionTag.value="new:" + newOption;
		try {
			obj.add(newOptionTag, obj.options[0]); // doesn't work in IE
		} catch(ex) {
			obj.add(newOptionTag, obj.selecedIndex); // IE only
		}
		obj.value="new:" + newOption;
	} else {
		obj.value=obj.options[0].value;
	}
	// Remove newOptDiv
	var newOptDiv = document.getElementById(aid+'_menu');
	var parent = newOptDiv.parentNode;
	var removedChild = parent.removeChild(newOptDiv);
}

function checkAll(form, name) {
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name.match(name)) {
			e.checked = form.elements['chkall'].checked;
		}
	}
}

function cnCode(str) {
	return is_ie && document.charset == 'utf-8' ? encodeURIComponent(str) : str;
}

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

function in_array(needle, haystack) {
	if(typeof needle == 'string' || typeof needle == 'number') {
		for(var i in haystack) {
			if(haystack[i] == needle) {
					return true;
			}
		}
	}
	return false;
}

function strlen(str) {
	return (is_ie && str.indexOf('\n') != -1) ? str.replace(/\r?\n/g, '_').length : str.length;
}

function getExt(path) {
	return path.lastIndexOf('.') == -1 ? '' : path.substr(path.lastIndexOf('.') + 1, path.length).toLowerCase();
}

function doane(event) {
	e = event ? event : window.event;
	if(is_ie) {
		e.returnValue = false;
		e.cancelBubble = true;
	} else if(e) {
		e.stopPropagation();
		e.preventDefault();
	}
}

//驗證碼
function seccode() {
	var img = 'do.php?ac=seccode&rand='+Math.random();
	document.writeln('<img id="img_seccode" src="'+img+'">');
}
function updateseccode() {
	var img = 'do.php?ac=seccode&rand='+Math.random();
	if($('img_seccode')) {
		$('img_seccode').src = img;
	}
}

//短消息
function newpm() {
	var obj = $('span_newpm');
	if(obj.style.color=="red") {
		obj.style.color="";
	} else {
		obj.style.color="red";
	}
	setTimeout("newpm();", 1000);
}

//縮小圖片並添加鏈接
function resizeImg(id,size) {
	var theImages = $(id).getElementsByTagName('img');
	for (i=0; i<theImages.length; i++) {
		theImages[i].onload = function() {
			if (this.width > size) {
				this.style.width = size + 'px';
				if (this.parentNode.tagName.toLowerCase() != 'a') {
					var zoomDiv = document.createElement('div');
					this.parentNode.insertBefore(zoomDiv,this);
					zoomDiv.appendChild(this);
					zoomDiv.style.position = 'relative';
					zoomDiv.style.cursor = 'pointer';
					
					this.title = '點擊圖片，在新窗口顯示原始尺寸';
					
					var zoom = document.createElement('img');
					zoom.src = 'image/zoom.gif';
					zoom.style.position = 'absolute';
					zoom.style.marginLeft = size -28 + 'px';
					zoom.style.marginTop = '5px';
					this.parentNode.insertBefore(zoom,this);
					
					zoomDiv.onmouseover = function() {
						zoom.src = 'image/zoom_h.gif';
					}
					zoomDiv.onmouseout = function() {
						zoom.src = 'image/zoom.gif';
					}
					zoomDiv.onclick = function() {
						window.open(this.childNodes[1].src);
					}
				}
			}
		}
	}
}

//Ctrl+Enter 發佈
function ctrlEnter(event, btnId, onlyEnter) {
	if(isUndefined(onlyEnter)) onlyEnter = 0;
	if((event.ctrlKey || onlyEnter) && event.keyCode == 13) {
		$(btnId).click();
	}
}
//縮放Textarea
function zoomTextarea(id, zoom) {
	zoomSize = zoom ? 10 : -10;
	obj = $(id);
	if(obj.rows + zoomSize > 0 && obj.cols + zoomSize * 3 > 0) {
		obj.rows += zoomSize;
		obj.cols += zoomSize * 3;
	}
}

//複製URL地址
function setCopy(_sTxt){
	if(is_ie) {
		clipboardData.setData('Text',_sTxt);
		alert ("網址「"+_sTxt+"」\n已經複製到您的剪貼板中\n您可以使用Ctrl+V快捷鍵粘貼到需要的地方");
	} else {
		prompt("請複製網站地址:",_sTxt); 
	}
}

//驗證是否有選擇記錄
function ischeck(id, prefix) {
	form = document.getElementById(id);
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name.match(prefix) && e.checked) {
			if(confirm("您確定要執行本操作嗎？")) {
				return true;
			} else {
				return false;
			}
		}
	}
	alert('請選擇要操作的對象');
	return false;
}
function showPreview(val, id) {
	var showObj = $(id);
	if(typeof showObj == 'object') {
		showObj.innerHTML = val.replace(/\n/ig, "<br />");
	}
}

//導航二級菜單
function openSub(obj,target) {
	closeSub();
	var tMenu = obj.previousSibling;
	var tLeft = tMenu.offsetLeft;
	var tTop = tMenu.offsetTop + 20;
	while(tMenu=tMenu.offsetParent) {
		tLeft+=tMenu.offsetLeft;
		tTop+=tMenu.offsetTop;
	}
	var tSub = $('sub' + target);
	tSub.style.left = tLeft + 'px';
	tSub.style.top = tTop + 'px';
	tSub.style.display = 'block';
	obj.blur();
	
	var clickId = 0;
	document.body.onclick = function() {
		clickId = clickId + 1;
		if( clickId > 1 ) {
			closeSub();
		}
	}
}

function closeSub() {
	var subMenu = $('submenu').getElementsByTagName('div');
	for (i=0;i<subMenu.length;i++) {
		subMenu[i].style.display = 'none';
	}
}