var note_step = 0;
var note_oldtitle = document.title;
var note_timer;
function checkFocus(target) {
	var obj = D(target);
	if(!obj.hasfocus) {
		obj.focus();
	}
}
function setMenuPosition(showid, offset) {
	var showobj = D(showid);
	var menuobj = D(showid + '_menu');
	if(isUndefined(offset)) offset = 0;
	if(showobj) {
		showobj.pos = fetchOffset(showobj);
		showobj.X = showobj.pos['left'];
		showobj.Y = showobj.pos['top'];
		showobj.w = showobj.offsetWidth;
		showobj.h = showobj.offsetHeight;
		menuobj.w = menuobj.offsetWidth;
		menuobj.h = menuobj.offsetHeight;
		if(offset != -1) {
			menuobj.style.left = (showobj.X + menuobj.w > document.body.clientWidth) && (showobj.X + showobj.w - menuobj.w >= 0) ? showobj.X + showobj.w - menuobj.w + 'px' : showobj.X + 'px';
			menuobj.style.top = offset == 1 ? showobj.Y + 'px' : (offset == 2 || ((showobj.Y + showobj.h + menuobj.h > document.documentElement.scrollTop + document.documentElement.clientHeight) && (showobj.Y - menuobj.h >= 0)) ? (showobj.Y - menuobj.h) + 'px' : showobj.Y + showobj.h + 'px');
		} else if(offset == -1) {
			menuobj.style.left = (document.body.clientWidth-menuobj.w)/2 + 'px';
			var divtop = document.documentElement.scrollTop + (document.documentElement.clientHeight-menuobj.h)/2;
			if(divtop > 100) divtop = divtop - 100;
			menuobj.style.top = divtop + 'px';
		}
		if(menuobj.style.clip && !is_opera) {
			menuobj.style.clip = 'rect(auto, auto, auto, auto)';
		}
	}
}

function hideMenu(layer) {
	if(isUndefined(layer)) layer = 0;
	if(jsmenu['active'][layer]) {
		try {
			D(jsmenu['active'][layer].ctrlkey).className = ctrlobjclassName;
		} catch(e) {}
		clearTimeout(jsmenu['timer'][jsmenu['active'][layer].ctrlkey]);
		jsmenu['active'][layer].style.display = 'none';
		if(is_ie && is_ie < 7 && jsmenu['iframe'][layer]) {
			jsmenu['iframe'][layer].style.display = 'none';
		}
		jsmenu['active'][layer] = null;
	}
}

function fetchOffset(obj) {
	var left_offset = obj.offsetLeft;
	var top_offset = obj.offsetTop;
	while((obj = obj.offsetParent) != null) {
		left_offset += obj.offsetLeft;
		top_offset += obj.offsetTop;
	}
	return { 'left' : left_offset, 'top' : top_offset };
}
//显示表情菜单
function showFace(showid, target) {
    var face_alt = new Array();
    face_alt[0] = '表情开始';
    face_alt[1] = '委屈';
    face_alt[2] = '威脅';
    face_alt[3] = '滴汗';
    face_alt[4] = '嘿嘿';
    face_alt[5] = '兔女郎';
    face_alt[6] = '我愛你';
    face_alt[7] = '暈哂浪';
    face_alt[8] = '俏皮臉';
    face_alt[9] = '怕醜死';
    face_alt[10] = '驚愕';
    face_alt[11] = '賊眉鼠眼';
    face_alt[12] = '痛';
    face_alt[13] = '好眼訓';
    face_alt[14] = '努力當中';
    face_alt[15] = '流哂口水';
    face_alt[16] = '無計la!';
    face_alt[17] = '笑眯眯';
    face_alt[18] = '喊死了!';
    face_alt[19] = '我好怒!';
    face_alt[20] = '大哭';
    face_alt[21] = '色眯眯';
    face_alt[22] = '病到顛';
    face_alt[23] = '安詳';
    face_alt[24] = '好激氣';
    face_alt[25] = '受傷';
    face_alt[26] = '大笑';
    face_alt[27] = '聽歌';
    face_alt[28] = '扮哂cool';
    face_alt[29] = '聯想';
    face_alt[30] = '咩呀';
	var div = D('face_bg');
	if(div) {
		div.parentNode.removeChild(div);
	}
	div = document.createElement('div');
	div.id = 'face_bg';
	div.style.position = 'absolute';
	div.style.left = div.style.top = '0px';
	div.style.width = '100%';
	div.style.height = document.body.scrollHeight + 'px';
	div.style.backgroundColor = '#000';
	div.style.zIndex = 10000;
	div.style.display = 'none';
	div.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=0,finishOpacity=100,style=0)';
	div.style.opacity = 0;
	div.onclick = function() {
		D(showid+'_menu').style.display = 'none';
		D('face_bg').style.display = 'none';
	}
	D('append_parent').appendChild(div);
	
	if(D(showid + '_menu') != null) {
		D(showid+'_menu').style.display = '';
	} else {
		var faceDiv = document.createElement("div");
		faceDiv.id = showid+'_menu';
		faceDiv.className = 'facebox';
		faceDiv.style.position = 'absolute';
		var faceul = document.createElement("ul");
		for(i=1; i<31; i++) {
			var faceli = document.createElement("li");
			faceli.innerHTML = '<a title="'+face_alt[i]+'" href="javascript:;"><img src="images/face/'+i+'.gif" alt="'+face_alt[i]+'" onclick="insertFace(\''+showid+'\','+i+', \''+ target +'\')" style="cursor:pointer; position:relative;" />';
			faceul.appendChild(faceli);
		}
		faceDiv.appendChild(faceul);
		D('append_parent').appendChild(faceDiv)
	}
	//定位菜单
	setMenuPosition(showid, 0);
	div.style.display = '';
}
//插入表情
function insertFace(showid, id, target) {
	var faceText = '[em:'+id+':]';
	if(D(target) != null) {
		insertContent(target, faceText);
	}
	D(showid+'_menu').style.display = 'none';
	D('face_bg').style.display = 'none';
}
function insertContent(target, text) {
	var obj = D(target);
	selection = document.selection;
	checkFocus(target);
	if(!isUndefined(obj.selectionStart)) {
		var opn = obj.selectionStart + 0;
		obj.value = obj.value.substr(0, obj.selectionStart) + text + obj.value.substr(obj.selectionEnd);
	} else if(selection && selection.createRange) {
		var sel = selection.createRange();
		sel.text = text;
		sel.moveStart('character', -strlen(text));
	} else {
		obj.value += text;
	}
}
function textCounter(obj, showid, maxlimit) {
	var len = strLen(obj.value);
	var showobj = D(showid);
	if(len > maxlimit) {
		obj.value = getStrbylen(obj.value, maxlimit);
		showobj.innerHTML = '0';
	} else {
		showobj.innerHTML = Math.ceil((maxlimit - len)/2);
	}
	if(maxlimit - len > 0) {
		showobj.parentNode.style.color = "";
	} else {
		showobj.parentNode.style.color = "red";
	}
	
}
function getStrbylen(str, len) 
{
	var num = 0;
	var strlen = 0;
	var newstr = "";
	var obj_value_arr = str.split("");
	for(var i = 0; i < obj_value_arr.length; i ++) {
		if(i < len && num + byteLength(obj_value_arr[i]) <= len) {
			num += byteLength(obj_value_arr[i]);
			strlen = i + 1;
		}
	}
	if(str.length > strlen) {
		newstr = str.substr(0, strlen);
	} else {
		newstr = str;
	}
	return newstr;
}
function byteLength (sStr) 
{
	aMatch = sStr.match(/[^\x00-\x80]/g);
	return (sStr.length + (! aMatch ? 0 : aMatch.length));
}
function strLen(str) 
{
	var charset = document.charset; 
	var len = 0;
	for(var i = 0; i < str.length; i++) {
		len += str.charCodeAt(i) < 0 || str.charCodeAt(i) > 255 ? (charset == "utf-8" ? 3 : 2) : 1;
	}
	return len;
}