// javascript document @charset "utf-8";

mtdropdown.spacergif = ""; 
mtdropdown.dingbaton = ""; 
mtdropdown.dingbatoff = ""; 
mtdropdown.dingbatsize = 14; 
mtdropdown.menupadding = 1; 
mtdropdown.itempadding = 4; 
mtdropdown.shadowsize = 2; 
mtdropdown.shadowoffset = 3; 
mtdropdown.shadowcolor = ""; 
mtdropdown.shadowpng = ""; 
mtdropdown.backgroundcolor = "#ffffff"; 
mtdropdown.backgroundpng = ""; 
mtdropdown.hidedelay = 500; 
mtdropdown.slidetime = 300; 

mtdropdown.reference = {topleft:1,topright:2,bottomleft:3,bottomright:4};
mtdropdown.direction = {down:1,right:2};
mtdropdown.registry = [];
mtdropdown._maxz = 100;

mtdropdown.issupported = function() {
	if (typeof mtdropdown.issupported.r == "boolean") 
		return mtdropdown.issupported.r;

	var ua = navigator.useragent.tolowercase();
	var an = navigator.appname;
	var r = false;

	if (ua.indexof("gecko") > -1) r = true; 
	else if (an == "microsoft internet explorer") {
		if (document.getelementbyid) r = true; 
	}

	mtdropdown.issupported.r = r;
	return r;
}

mtdropdown.initialize = function() {
	for (var i = 0, menu = null; menu = this.registry[i]; i++) {
		menu.initialize();
	}
}

mtdropdown.renderall = function() {
	var amenuhtml = [];
	for (var i = 0, menu = null; menu = this.registry[i]; i++) {
		amenuhtml[i] = menu.tostring();
	}

	document.write(amenuhtml.join(""));
}

/////////////////////////////// class mtdropdown begins /////////////

function mtdropdown(oactuator, idirection, ileft, itop, ireferencepoint, parentmenuset) {

	this.additem = additem;
	this.addmenu = addmenu;
	this.tostring = tostring;
	this.initialize = initialize;
	this.isopen = false;
	this.show = show;
	this.hide = hide;
	this.items = [];

	this.onactivate = new function(); 
	this.ondeactivate = new function(); 
	this.onmouseover = new function(); 
	this.onqueue = new function(); 

	this.index = mtdropdown.registry.length;
	mtdropdown.registry[this.index] = this;
	var id = "mtdropdown" + this.index;
	var contentheight = null;
	var contentwidth = null;
	var childmenuset = null;
	var animating = false;
	var childmenus = [];
	var slideaccel = -1;
	var elmcache = null;
	var ready = false;
	var _this = this;
	var a = null;
	var pos = idirection == mtdropdown.direction.down ? "top" : "left";
	var dim = null;

	function additem(stext, surl) {
		var item = new mtdropdownitem(stext, surl, this);
		item._index = this.items.length;
		this.items[item._index] = item;
	}

	function addmenu(omenuitem) {
		if (!omenuitem.parentmenu == this) throw new error("cannot add a menu here");
		if (childmenuset == null) childmenuset = new mtdropdownset(mtdropdown.direction.right, -5, 2, mtdropdown.reference.topright);
		var m = childmenuset.addmenu(omenuitem);
		childmenus[omenuitem._index] = m;
		m.onmouseover = child_mouseover;
		m.ondeactivate = child_deactivate;
		m.onqueue = child_queue;
		return m;
	}

	function initialize() {
		initcache();
		initevents();
		initsize();
		ready = true;
	}

	function show() {
		if (ready) {
			_this.isopen = true;
			animating = true;
			setcontainerpos();
			elmcache["clip"].style.visibility = "visible";
			elmcache["clip"].style.zindex = mtdropdown._maxz++;

			slidestart();
			_this.onactivate();
		}
	}

	function hide() {
		if (ready) {
			_this.isopen = false;
			animating = true;
			for (var i = 0, item = null; item = elmcache.item[i]; i++) 
			dehighlight(item);
			if (childmenuset) childmenuset.hide();
			slidestart();
			_this.ondeactivate();
		}
	}

	function setcontainerpos() {
		var sub = oactuator.constructor == mtdropdownitem; 
		var act = sub ? oactuator.parentmenu.elmcache["item"][oactuator._index] : oactuator; 
		var el = act;
		var x = 0;
		var y = 0;
		var minx = 0;
		var maxx = (window.innerwidth ? window.innerwidth : document.body.clientwidth) - parseint(elmcache["clip"].style.width);
		var miny = 0;
		var maxy = (window.innerheight ? window.innerheight : document.body.clientheight) - parseint(elmcache["clip"].style.height);

		while (sub ? el.parentnode.classname.indexof("mtdropdownmenu") == -1 : el.offsetparent) {
			x += el.offsetleft;
			y += el.offsettop;
			if (el.scrollleft) x -= el.scrollleft;
			if (el.scrolltop) y -= el.scrolltop;
			el = el.offsetparent;
		}

		if (oactuator.constructor == mtdropdownitem) {
			x += parseint(el.parentnode.style.left);
			y += parseint(el.parentnode.style.top);
		}

		switch (ireferencepoint) {
			case mtdropdown.reference.topleft:
			break;

			case mtdropdown.reference.topright:
			x += act.offsetwidth;
			break;

			case mtdropdown.reference.bottomleft:
			y += act.offsetheight;
			break;

			case mtdropdown.reference.bottomright:
			x += act.offsetwidth;
			y += act.offsetheight;
			break;
		}

		x += ileft;
		y += itop;
		x = math.max(math.min(x, maxx), minx);
		y = math.max(math.min(y, maxy), miny);
		elmcache["clip"].style.left = x + "px";
		elmcache["clip"].style.top = y + "px";
	}

	function slidestart() {
		var x0 = parseint(elmcache["content"].style[pos]);
		var x1 = _this.isopen ? 0 : -dim;
		if (a != null) a.stop();
		a = new accelimation(x0, x1, mtdropdown.slidetime, slideaccel);
		a.onframe = slideframe;
		a.onend = slideend;
		a.start();
	}

	function slideframe(x) {
		elmcache["content"].style[pos] = x + "px";
	}

	function slideend() {
		if (!_this.isopen) elmcache["clip"].style.visibility = "hidden";
			animating = false;
	}

	function initsize() {

		var ow = elmcache["items"].offsetwidth;
		var oh = elmcache["items"].offsetheight;
		var ua = navigator.useragent.tolowercase();

		elmcache["clip"].style.width = ow + mtdropdown.shadowsize + 2 + "px";
		elmcache["clip"].style.height = oh + mtdropdown.shadowsize + 2 + "px";

		elmcache["content"].style.width = ow + mtdropdown.shadowsize + "px";
		elmcache["content"].style.height = oh + mtdropdown.shadowsize + "px";
		contentheight = oh + mtdropdown.shadowsize;
		contentwidth = ow + mtdropdown.shadowsize;
		dim = idirection == mtdropdown.direction.down ? contentheight : contentwidth;

		elmcache["content"].style[pos] = -dim - mtdropdown.shadowsize + "px";
		elmcache["clip"].style.visibility = "hidden";

		if (ua.indexof("mac") == -1 || ua.indexof("gecko") > -1) {

			elmcache["background"].style.width = ow + "px";
			elmcache["background"].style.height = oh + "px";
			elmcache["background"].style.backgroundcolor = mtdropdown.backgroundcolor;

			elmcache["shadowright"].style.left = ow + "px";
			elmcache["shadowright"].style.height = oh - (mtdropdown.shadowoffset - mtdropdown.shadowsize) + "px";
			elmcache["shadowright"].style.backgroundcolor = mtdropdown.shadowcolor;



			elmcache["shadowbottom"].style.top = oh + "px";
			elmcache["shadowbottom"].style.width = ow - mtdropdown.shadowoffset + "px";
			elmcache["shadowbottom"].style.backgroundcolor = mtdropdown.shadowcolor;
		} else {
			elmcache["background"].firstchild.src = mtdropdown.backgroundpng;
			elmcache["background"].firstchild.width = ow;
			elmcache["background"].firstchild.height = oh;

			elmcache["shadowright"].firstchild.src = mtdropdown.shadowpng;
			elmcache["shadowright"].style.left = ow + "px";
			elmcache["shadowright"].firstchild.width = mtdropdown.shadowsize;
			elmcache["shadowright"].firstchild.height = oh - (mtdropdown.shadowoffset - mtdropdown.shadowsize);

			elmcache["shadowbottom"].firstchild.src = mtdropdown.shadowpng;
			elmcache["shadowbottom"].style.top = oh + "px";
			elmcache["shadowbottom"].firstchild.height = mtdropdown.shadowsize;
			elmcache["shadowbottom"].firstchild.width = ow - mtdropdown.shadowoffset;
		}
	}

	function initcache() {
		var menu = document.getelementbyid(id);
		var all = menu.all ? menu.all : menu.getelementsbytagname("*"); 
		elmcache = {};
		elmcache["clip"] = menu;
		elmcache["item"] = [];
		for (var i = 0, elm = null; elm = all[i]; i++) {
			switch (elm.classname) {
				case "items":
				case "content":
				case "background":
				case "shadowright":
				case "shadowbottom":
				elmcache[elm.classname] = elm;
				break;
				case "item":
				elm._index = elmcache["item"].length;
				elmcache["item"][elm._index] = elm;
				break;
			}
		}

		_this.elmcache = elmcache;
	}

	function initevents() {

		for (var i = 0, item = null; item = elmcache.item[i]; i++) {
			item.onmouseover = item_mouseover;
			item.onmouseout = item_mouseout;
			item.onclick = item_click;
		}

		if (typeof oactuator.tagname != "undefined") {
			oactuator.onmouseover = actuator_mouseover;
			oactuator.onmouseout = actuator_mouseout;
		}

		elmcache["content"].onmouseover = content_mouseover;
		elmcache["content"].onmouseout = content_mouseout;
	}

	function highlight(orow) {
		orow.classname = "item hover";
		if (childmenus[orow._index]) 
			orow.lastchild.firstchild.src = mtdropdown.dingbaton;
		}

	function dehighlight(orow) {
		orow.classname = "item";
		if (childmenus[orow._index]) 
			orow.lastchild.firstchild.src = mtdropdown.dingbatoff;
	}

	function item_mouseover() {
		if (!animating) {
			highlight(this);

			if (childmenus[this._index]) 
				childmenuset.showmenu(childmenus[this._index]);
			else if (childmenuset) childmenuset.hide();
		}
	}

	function item_mouseout() {
		if (!animating) {
			if (childmenus[this._index])
				childmenuset.hidemenu(childmenus[this._index]);
			else 
				dehighlight(this);
		}
	}

	function item_click() {
		if (!animating) {
			if (_this.items[this._index].url) 
				location.href = _this.items[this._index].url;
		}
	}

	function actuator_mouseover() {
		parentmenuset.showmenu(_this);
	}

	function actuator_mouseout() {
		parentmenuset.hidemenu(_this);
	}

	function content_mouseover() {
		if (!animating) {
			parentmenuset.showmenu(_this);
			_this.onmouseover();
		}
	}

	function content_mouseout() {
		if (!animating) {
			parentmenuset.hidemenu(_this);
		}
	}

	function child_mouseover() {
		if (!animating) {
			parentmenuset.showmenu(_this);
		}
	}

	function child_deactivate() {
		for (var i = 0; i < childmenus.length; i++) {
			if (childmenus[i] == this) {
				dehighlight(elmcache["item"][i]);
				break;
			}
		}
	}

	function child_queue() {
		parentmenuset.hidemenu(_this);
	}

	function tostring() {
		var ahtml = [];
		var sclassname = "mtdropdownmenu" + (oactuator.constructor != mtdropdownitem ? " top" : "");
		for (var i = 0, item = null; item = this.items[i]; i++) {
			ahtml[i] = item.tostring(childmenus[i]);
		}

		return '<div id="' + id + '" class="' + sclassname + '">' + 
		'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">' + 
		ahtml.join('') + 
		'</table>' + 
		'<div class="shadowbottom"><img src="' + mtdropdown.spacergif + '" width="1" height="1"></div>' + 
		'<div class="shadowright"><img src="' + mtdropdown.spacergif + '" width="1" height="1"></div>' + 
		'<div class="background"><img src="' + mtdropdown.spacergif + '" width="1" height="1"></div>' + 
		'</div></div>';
	}
}

/////////////////////////////// class mtdropdown ends /////////////

mtdropdownset.registry = [];
function mtdropdownset(idirection, ileft, itop, ireferencepoint) {

	this.addmenu = addmenu;
	this.showmenu = showmenu;
	this.hidemenu = hidemenu;
	this.hide = hide;

	var menus = [];
	var _this = this;
	var current = null;
	this.index = mtdropdownset.registry.length;
	mtdropdownset.registry[this.index] = this;

	function addmenu(oactuator) {
		var m = new mtdropdown(oactuator, idirection, ileft, itop, ireferencepoint, this);
		menus[menus.length] = m;
		return m;
	}

	function showmenu(omenu) {
		if (omenu != current) {
			if (current != null) hide(current); 
				current = omenu;
			omenu.show();
		} else {
			cancelhide(omenu);
		}
	}

	function hidemenu(omenu) {
		if (current == omenu && omenu.isopen) {
			if (!omenu.hidetimer) schedulehide(omenu);
		}
	}

	function schedulehide(omenu) {
		omenu.onqueue();
		omenu.hidetimer = window.settimeout("mtdropdownset.registry[" + _this.index + "].hide(mtdropdown.registry[" + omenu.index + "])", mtdropdown.hidedelay);
	}

	function cancelhide(omenu) {
		if (omenu.hidetimer) {
			window.cleartimeout(omenu.hidetimer);
			omenu.hidetimer = null;
		}
	}

	function hide(omenu) { 
		if (!omenu && current) omenu = current;
		if (omenu && current == omenu && omenu.isopen) {

			cancelhide(omenu);
			current = null;
			omenu.hidetimer = null;
			omenu.hide();
		}
	}
}

function mtdropdownitem(stext, surl, oparent) {
	this.tostring = tostring;
	this.text = stext;
	this.url = surl;
	this.parentmenu = oparent;

	function tostring(bdingbat) {
		var sdingbat = bdingbat ? mtdropdown.dingbatoff : mtdropdown.spacergif;
		var iedgepadding = mtdropdown.itempadding + mtdropdown.menupadding;
		var spaddingleft = "padding:" + mtdropdown.itempadding + "px; padding-left:" + iedgepadding + "px;"
		var spaddingright = "padding:" + mtdropdown.itempadding + "px; padding-right:" + iedgepadding + "px;"

///////////////////////////////////////////////////////////////// 横条
		return '<tr><td class="item" nowrap>' + 
		stext + '</td></tr>'; 
	}
}

function accelimation(from, to, time, zip) {
	if (typeof zip == "undefined") zip = 0;
	if (typeof unit == "undefined") unit = "px";
	this.x0 = from;
	this.x1 = to;
	this.dt = time;
	this.zip = -zip;
	this.unit = unit;
	this.timer = null;
	this.onend = new function();
	this.onframe = new function();
}

accelimation.prototype.start = function() {
	this.t0 = new date().gettime();
	this.t1 = this.t0 + this.dt;
	var dx = this.x1 - this.x0;
	this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
	this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
	accelimation._add(this);
}

accelimation.prototype.stop = function() {
	accelimation._remove(this);
}

accelimation.prototype._paint = function(time) {
	if (time < this.t1) {
		var elapsed = time - this.t0;
		this.onframe(accelimation._getbezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
	}
	else this._end();
}

accelimation.prototype._end = function() {
	accelimation._remove(this);
	this.onframe(this.x1);
	this.onend();
}

accelimation._add = function(o) {
	var index = this.instances.length;
	this.instances[index] = o;

	if (this.instances.length == 1) {
		this.timerid = window.setinterval("accelimation._paintall()", this.targetres);
	}
}

accelimation._remove = function(o) {
	for (var i = 0; i < this.instances.length; i++) {
		if (o == this.instances[i]) {
			this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
			break;
		}
	}

	if (this.instances.length == 0) {
		window.clearinterval(this.timerid);
		this.timerid = null;
	}
}

accelimation._paintall = function() {
		var now = new date().gettime();
		for (var i = 0; i < this.instances.length; i++) {
			this.instances[i]._paint(now);
	}
}

accelimation._b1 = function(t) { return t*t*t }
accelimation._b2 = function(t) { return 3*t*t*(1-t) }
accelimation._b3 = function(t) { return 3*t*(1-t)*(1-t) }
accelimation._b4 = function(t) { return (1-t)*(1-t)*(1-t) }

accelimation._getbezier = function(percent,startpos,endpos,control1,control2) {
	return endpos * this._b1(percent) + control2 * this._b2(percent) + control1 * this._b3(percent) + startpos * this._b4(percent);
}

accelimation.instances = [];
accelimation.targetres = 10;
accelimation.timerid = null;