jquery的导航页面七(nodeDocPage.jsp续)

// 鼠标移至导航条时的弹出隐藏下拉菜单
function toolBarHover(span) {
// 该数组存放各select控件原始的visibility属性值

var originalStatus = new Array();
var pop = $("#popup");
$(span).hover(function(){
span.attr("className", "tool_bar_onmouseover");

var spanOffset = $(this).offset();
pop.attr("className", "popup_mouseover");
pop.css("left", spanOffset.left - $("#c_shadow").offset().left);
pop.css("top", spanOffset.top - $("#c_shadow").offset().top + $(this).height());

pop.empty();

var level = parseInt(span.attr("level"));
var classmates = navigation_bar_classmates[level];

for (var i=0; i < classmates.length; i++) {

var item = $("<span></span>");

item.attr("id", classmates[i].item_id);
item.attr("level", classmates[i].level);
item.text(classmates[i].item_name);
item.bind("click", function(){
addNavigationItem($(this).clone());
pop.hide();
return false;
});

item.attr("className", "popup_mouseover");

item.hover(menuItemOnMouseOver, menuItemOnMouseOut);
pop.append(item);
}

//设置该对象的事件
pop.hover(divPopupOnMouseOver, divPopupOnMouseOut);

if (getOs() == "MSIE") {
var frm = $("<iframe id='iframePopup' scrolling='no' frameborder='0' style='position:absolute;visibility:inherit; top:0px; left:0px;'></iframe>");
frm.width(pop.width());
frm.height(pop.height());
frm.css("zIndex", pop.css("zIndex") - 1);
pop.append(frm);
}

pop.show("fast");
}, function(e) {
$(span).attr("className", "normal");
var left = $(span).offset().left;
var top = $(span).offset().top;
var height = $(span).height();

//获得鼠标位置
var x, y;
e = e || window.event;
if(e.pageX || e.pageY){
x=e.pageX;
y=e.pageY;
}else{
x=document.body.scrollLeft+event.clientX;
y=document.body.scrollTop+event.clientY;
}
if (!(y >= top+height)) {
pop.hide();
}
});
}
// 获取用户使用的浏览器
function getOs()
{
var OsObject = "";
if(navigator.userAgent.indexOf("MSIE")>0) {
return "MSIE";
}
if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){
return "Firefox";
}
if(isChrome=navigator.userAgent.indexOf("Chrome")>0){
return "Chrome";
}
if(isSafari=navigator.userAgent.indexOf("Safari")>0) {
return "Safari";
}
if(isCamino=navigator.userAgent.indexOf("Camino")>0){
return "Camino";
}
if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0){
return "Gecko";
}
}

function menuItemOnMouseOver() {
$(this).attr("className", "popup_item_hover");
}

function menuItemOnMouseOut() {
$(this).attr("className", "popup_mouseover");
}

function divPopupOnMouseOver() {
}

function divPopupOnMouseOut() {
$(this).hide();
}