现在的代码是非要鼠标点击才能切换，而我想鼠标放上去就自动切换，请问怎么修改呀，谢谢！！！
就是达到新浪网http://www.的《教育、培训、招生、出国》，这种效果。
下面是我现在的代码

var Spry;
if (!Spry) Spry = {};
if (!Spry.Widget) Spry.Widget = {};

Spry.Widget.TabbedPanels = function(element, opts)
{
    this.element = this.getElement(element);
    this.defaultTab = 0; // Show the first panel by default.
    this.bindings = [];
    this.tabSelectedClass = "TabbedPanelsTabSelected";
    this.tabHoverClass = "TabbedPanelsTabHover";
    this.tabFocusedClass = "TabbedPanelsTabFocused";
    this.panelVisibleClass = "TabbedPanelsContentVisible";
    this.focusElement = null;
    this.hasFocus = false;
    this.currentTabIndex = 0;
    this.enableKeyboardNavigation = true;

    Spry.Widget.TabbedPanels.setOptions(this, opts);

    if (typeof (this.defaultTab) == "number")
    {
        if (this.defaultTab < 0)
            this.defaultTab = 0;
        else
        {
            var count = this.getTabbedPanelCount();
            if (this.defaultTab >= count)
                this.defaultTab = (count > 1) ? (count - 1) : 0;
        }

        this.defaultTab = this.getTabs()[this.defaultTab];
    }

    if (this.defaultTab)
        this.defaultTab = this.getElement(this.defaultTab);

    this.attachBehaviors();
};

Spry.Widget.TabbedPanels.prototype.getElement = function(ele)
{
    if (ele && typeof ele == "string")
        return document.getElementById(ele);
    return ele;
}

Spry.Widget.TabbedPanels.prototype.getElementChildren = function(element)
{
    var children = [];
    var child = element.firstChild;
    while (child)
    {
        if (child.nodeType == 1 /* Node.ELEMENT_NODE */)
            children.push(child);
        child = child.nextSibling;
    }
    return children;
};

Spry.Widget.TabbedPanels.prototype.addClassName = function(ele, className)
{
    if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))
        return;
    ele.className += (ele.className ? " " : "") + className;
};

Spry.Widget.TabbedPanels.prototype.removeClassName = function(ele, className)
{
    if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))
        return;
    ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
};

Spry.Widget.TabbedPanels.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
{
    if (!optionsObj)
        return;
    for (var optionName in optionsObj)
    {
        if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
            continue;
        obj[optionName] = optionsObj[optionName];
    }
};

Spry.Widget.TabbedPanels.prototype.getTabGroup = function()
{
    if (this.element)
    {
        var children = this.getElementChildren(this.element);
        if (children.length)
            return children[0];
    }
    return null;
};

Spry.Widget.TabbedPanels.prototype.getTabs = function()
{
    var tabs = [];
    var tg = this.getTabGroup();
    if (tg)
        tabs = this.getElementChildren(tg);
    return tabs;
};

Spry.Widget.TabbedPanels.prototype.getContentPanelGroup = function()
{
    if (this.element)
    {
        var children = this.getElementChildren(this.element);
        if (children.length > 1)
            return children[1];
    }
    return null;
};

Spry.Widget.TabbedPanels.prototype.getContentPanels = function()
{
    var panels = [];
    var pg = this.getContentPanelGroup();
    if (pg)
        panels = this.getElementChildren(pg);
    return panels;
};

Spry.Widget.TabbedPanels.prototype.getIndex = function(ele, arr)
{
    ele = this.getElement(ele);
    if (ele && arr && arr.length)
    {
        for (var i = 0; i < arr.length; i++)
        {
            if (ele == arr[i])
                return i;
        }
    }
    return -1;
};

Spry.Widget.TabbedPanels.prototype.getTabIndex = function(ele)
{
    var i = this.getIndex(ele, this.getTabs());
    if (i < 0)
        i = this.getIndex(ele, this.getContentPanels());
    return i;
};

Spry.Widget.TabbedPanels.prototype.getCurrentTabIndex = function()
{
    return this.currentTabIndex;
};

Spry.Widget.TabbedPanels.prototype.getTabbedPanelCount = function(ele)
{
    return Math.min(this.getTabs().length, this.getContentPanels().length);
};

Spry.Widget.TabbedPanels.addEventListener = function(element, eventType, handler, capture)
{
    try
    {
        if (element.addEventListener)
            element.addEventListener(eventType, handler, capture);
        else if (element.attachEvent)
            element.attachEvent("on" + eventType, handler);
    }
    catch (e) {}
};

Spry.Widget.TabbedPanels.prototype.onTabClick = function(e, tab)
{
    this.showPanel(tab);
};

Spry.Widget.TabbedPanels.prototype.onTabMouseOver = function(e, tab)
{
    this.addClassName(tab, this.tabHoverClass);
};

Spry.Widget.TabbedPanels.prototype.onTabMouseOut = function(e, tab)
{
    this.removeClassName(tab, this.tabHoverClass);
};

Spry.Widget.TabbedPanels.prototype.onTabFocus = function(e, tab)
{
    this.hasFocus = true;
    this.addClassName(this.element, this.tabFocusedClass);
};

Spry.Widget.TabbedPanels.prototype.onTabBlur = function(e, tab)
{
    this.hasFocus = false;
    this.removeClassName(this.element, this.tabFocusedClass);
};

Spry.Widget.TabbedPanels.ENTER_KEY = 13;
Spry.Widget.TabbedPanels.SPACE_KEY = 32;

Spry.Widget.TabbedPanels.prototype.onTabKeyDown = function(e, tab)
{
    var key = e.keyCode;
    if (!this.hasFocus || (key != Spry.Widget.TabbedPanels.ENTER_KEY && key != Spry.Widget.TabbedPanels.SPACE_KEY))
        return true;

    this.showPanel(tab);

    if (e.stopPropagation)
        e.stopPropagation();
    if (e.preventDefault)
        e.preventDefault();

    return false;
};

Spry.Widget.TabbedPanels.prototype.preorderTraversal = function(root, func)
{
    var stopTraversal = false;
    if (root)
    {
        stopTraversal = func(root);
        if (root.hasChildNodes())
        {
            var child = root.firstChild;
            while (!stopTraversal && child)
            {
                stopTraversal = this.preorderTraversal(child, func);
                try { child = child.nextSibling; } catch (e) { child = null; }
            }
        }
    }
    return stopTraversal;
};

Spry.Widget.TabbedPanels.prototype.addPanelEventListeners = function(tab, panel)
{
    var self = this;
    Spry.Widget.TabbedPanels.addEventListener(tab, "click", function(e) { return self.onTabClick(e, tab); }, false);
    Spry.Widget.TabbedPanels.addEventListener(tab, "mouseover", function(e) { return self.onTabMouseOver(e, tab); }, false);
    Spry.Widget.TabbedPanels.addEventListener(tab, "mouseout", function(e) { return self.onTabMouseOut(e, tab); }, false);

    if (this.enableKeyboardNavigation)
    {
        
        var tabIndexEle = null;
        var tabAnchorEle = null;

        this.preorderTraversal(tab, function(node) {
            if (node.nodeType == 1 /* NODE.ELEMENT_NODE */)
            {
                var tabIndexAttr = tab.attributes.getNamedItem("tabindex");
                if (tabIndexAttr)
                {
                    tabIndexEle = node;
                    return true;
                }
                if (!tabAnchorEle && node.nodeName.toLowerCase() == "a")
                    tabAnchorEle = node;
            }
            return false;
        });

        if (tabIndexEle)
            this.focusElement = tabIndexEle;
        else if (tabAnchorEle)
            this.focusElement = tabAnchorEle;

        if (this.focusElement)
        {
            Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "focus", function(e) { return self.onTabFocus(e, tab); }, false);
            Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "blur", function(e) { return self.onTabBlur(e, tab); }, false);
            Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "keydown", function(e) { return self.onTabKeyDown(e, tab); }, false);
        }
    }
};

Spry.Widget.TabbedPanels.prototype.showPanel = function(elementOrIndex)
{
    var tpIndex = -1;
    
    if (typeof elementOrIndex == "number")
        tpIndex = elementOrIndex;
    else // Must be the element for the tab or content panel.
        tpIndex = this.getTabIndex(elementOrIndex);
    
    if (!tpIndex < 0 || tpIndex >= this.getTabbedPanelCount())
        return;

    var tabs = this.getTabs();
    var panels = this.getContentPanels();

    var numTabbedPanels = Math.max(tabs.length, panels.length);

    for (var i = 0; i < numTabbedPanels; i++)
    {
        if (i != tpIndex)
        {
            if (tabs[i])
                this.removeClassName(tabs[i], this.tabSelectedClass);
            if (panels[i])
            {
                this.removeClassName(panels[i], this.panelVisibleClass);
                panels[i].style.display = "none";
            }
        }
    }

    this.addClassName(tabs[tpIndex], this.tabSelectedClass);
    this.addClassName(panels[tpIndex], this.panelVisibleClass);
    panels[tpIndex].style.display = "block";

    this.currentTabIndex = tpIndex;
};

Spry.Widget.TabbedPanels.prototype.attachBehaviors = function(element)
{
    var tabs = this.getTabs();
    var panels = this.getContentPanels();
    var panelCount = this.getTabbedPanelCount();

    for (var i = 0; i < panelCount; i++)
        this.addPanelEventListeners(tabs[i], panels[i]);

    this.showPanel(this.defaultTab);
};

[[it] 本帖最后由 ylsn 于 2008-6-16 23:32 编辑 [/it]]

Spry.Widget.TabbedPanels.prototype.onTabMouseOver = function(e, tab)
{
    this.addClassName(tab, this.tabHoverClass);
};


改成

Spry.Widget.TabbedPanels.prototype.onTabMouseOver = function(e, tab)
{
    this.addClassName(tab, this.tabHoverClass);
    this.showPanel(tab)
};

非常感谢斑竹的帮助，到达效果了，十分感谢呀，呵呵
不过我觉得this.showPanel(tab)后应加个分号。但没加和加了效果都一样，但按常理来说是要加的，呵呵

忘加了而已