menu1.js

网络订餐基于jsp与servlet的网络订餐系统 适合学生使用

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 = GDNetMenuDown.dingbatOn;
}
function dehighlight(oRow) {
oRow.className = "item";
if (childMenus[oRow._index]) 
oRow.lastChild.firstChild.src = GDNetMenuDown.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 = "GDNetMenuDownMenu" + (oActuator.constructor != GDNetMenuDownItem ? " 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">' + 
'<tr><td colspan="2"><img src="' + GDNetMenuDown.spacerGif + '" width="1" height="' + GDNetMenuDown.menuPadding + '"></td></tr>' + 
aHtml.join('') + 
'<tr><td colspan="2"><img src="' + GDNetMenuDown.spacerGif + '" width="1" height="' + GDNetMenuDown.menuPadding + '"></td></tr></table>' + 
'<div class="shadowBottom"><img src="' + GDNetMenuDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="shadowRight"><img src="' + GDNetMenuDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="background"><img src="' + GDNetMenuDown.spacerGif + '" width="1" height="1"></div>' + 
'</div></div>';
}
}

GDNetMenuDownSet.registry = [];
function GDNetMenuDownSet(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 = GDNetMenuDownSet.registry.length;
GDNetMenuDownSet.registry[this.index] = this;

function addMenu(oActuator) {
var m = new GDNetMenuDown(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("GDNetMenuDownSet.registry[" + _this.index + "].hide(GDNetMenuDown.registry[" + oMenu.index + "])", GDNetMenuDown.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 GDNetMenuDownItem(sText, sUrl, oParent) {
this.toString = toString;
this.text = sText;
//this.url = sUrl;       //打开的地址
this.parentMenu = oParent;
function toString(bDingbat) {
var sDingbat = bDingbat ? GDNetMenuDown.dingbatOff : GDNetMenuDown.spacerGif;
var iEdgePadding = GDNetMenuDown.itemPadding + GDNetMenuDown.menuPadding;
var sPaddingLeft = "padding:" + GDNetMenuDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
var sPaddingRight = "padding:" + GDNetMenuDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
return '<tr class="item" style="color:#ffffff; background-color:#41a30c"><td nowrap  height="26"><img src="./images/1.gif" width="13" height="13"></td><td  nowrap   width=120>&nbsp;<a href="'+ sUrl +'" target="main" style="color:#ffffff; background-color:#41a30c">' + sText + '</a></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;

function init() {
		if (GDNetMenuDown.isSupported()) {
				GDNetMenuDown.initialize();
			}
		}