我正在尝试修改包含不同类别图标，过滤复选框和侧边栏链接的地图代码（以便将鼠标悬停在侧边栏链接上会导致地图图标反弹）：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Google Maps</title>
<script src="http://maps.google.com/maps?file=api&v=2&sensor=false&key=ABQIAAAAPDUET0Qt7p2VcSk6JNU1sBSM5jMcmVqUpI7aqV44cW1cEECiThQYkcZUPRJn9vy_TWxWvuLoOfSFBw" type="text/javascript"></script>
</head>
<body onunload="GUnload()">
<!-- you can use tables or divs for the overall layout -->
<table border=1>
<tr>
<td>
<div id="map" style="width: 550px; height: 450px"></div>
</td>
<td width = 150 valign="top" style="text-decoration: underline; color: #4444ff;">
<div id="side_bar"></div>
</td>
</tr>
</table>
<form action="#">
Theatres: <input type="checkbox" id="theatrebox" onclick="boxclick(this,'theatre')" />
Golf Courses: <input type="checkbox" id="golfbox" onclick="boxclick(this,'golf')" />
Tourist Information: <input type="checkbox" id="infobox" onclick="boxclick(this,'info')" /><br />
</form>
<noscript><b>JavaScript must be enabled in order for you to use Google Maps.</b>
However, it seems JavaScript is either disabled or not supported by your browser.
To view Google Maps, enable JavaScript by changing your browser options, and then
try again.
</noscript>
<script type="text/javascript">
//<![CDATA[
if (GBrowserIsCompatible()) {
var gmarkers = [];
var gicons = [];
var baseIcon = new GIcon(G_DEFAULT_ICON);
baseIcon.iconAnchor = new GPoint(9,34);
baseIcon.iconSize = new GSize(20,34);
baseIcon.infoWindowAnchor = new GPoint(9,2);
gicons["theatre"] = new GIcon(baseIcon,"http://econym.org.uk/gmap/colour086.png");
gicons["golf"] = new GIcon(baseIcon,"http://econym.org.uk/gmap/colour108.png");
gicons["info"] = new GIcon(baseIcon,"http://econym.org.uk/gmap/colour125.png");
// A function to create the marker and set up the event window
function createMarker(point,name,html,category) {
var marker = new GMarker(point,gicons[category]);
// === Store the category and name info as a marker properties ===
marker.mycategory = category;
marker.myname = name;
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(html);
});
gmarkers.push(marker);
return marker;
}
// == shows all markers of a particular category, and ensures the checkbox is checked ==
function show(category) {
for (var i=0; i<gmarkers.length; i++) {
if (gmarkers[i].mycategory == category) {
gmarkers[i].show();
}
}
// == check the checkbox ==
document.getElementById(category+"box").checked = true;
}
// == hides all markers of a particular category, and ensures the checkbox is cleared ==
function hide(category) {
for (var i=0; i<gmarkers.length; i++) {
if (gmarkers[i].mycategory == category) {
gmarkers[i].hide();
}
}
// == clear the checkbox ==
document.getElementById(category+"box").checked = false;
// == close the info window, in case its open on a marker that we just hid
map.closeInfoWindow();
}
// == a checkbox has been clicked ==
function boxclick(box,category) {
if (box.checked) {
show(category);
} else {
hide(category);
}
// == rebuild the side bar
makeSidebar();
}
function myclick(i) {
GEvent.trigger(gmarkers[i],"click");
}
// == rebuilds the sidebar to match the markers currently displayed ==
function makeSidebar() {
var html = "";
for (var i=0; i<gmarkers.length; i++) {
if (!gmarkers[i].isHidden()) {
html += '<a onmouseover="javascript:makeBounce(gmarkers[i]);" href="javascript:myclick(' + i + ')">' + gmarkers[i].myname + '<\/a><br>';
}
}
document.getElementById("side_bar").innerHTML = html;
}
// Bounce marker
function makeBounce(marker) {
marker.setAnimation(google.maps.Animation.BOUNCE);
setTimeout(function(){ marker.setAnimation(null); }, 500);
}
// create the map
var map = new GMap2(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng(53.8363,-3.0377), 11);
// Read the data
GDownloadUrl("categories.xml", function(doc) {
var xmlDoc = GXml.parse(doc);
var markers = xmlDoc.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
// obtain the attribues of each marker
var lat = parseFloat(markers[i].getAttribute("lat"));
var lng = parseFloat(markers[i].getAttribute("lng"));
var point = new GLatLng(lat,lng);
var address = markers[i].getAttribute("address");
var name = markers[i].getAttribute("name");
var html = "<b>"+name+"<\/b><p>"+address;
var category = markers[i].getAttribute("category");
// create the marker
var marker = createMarker(point,name,html,category);
map.addOverlay(marker);
}
// == show or hide the categories initially ==
show("theatre");
hide("golf");
hide("info");
// == create the initial sidebar ==
makeSidebar();
});
}
else {
alert("Sorry, the Google Maps API is not compatible with this browser");
}
//]]>
</script>
</body>
</html>
我遇到问题的代码部分如下：
// == rebuilds the sidebar to match the markers currently displayed ==
function makeSidebar() {
var html = "";
for (var i=0; i<gmarkers.length; i++) {
if (!gmarkers[i].isHidden()) {
//bounce map icon when hovering mouse over link
html += '<a onmouseover="javascript:makeBounce(gmarkers[i]);" href="javascript:myclick(' + i + ')">' + gmarkers[i].myname + '<\/a><br>';
}
}
document.getElementById("side_bar").innerHTML = html;
}
//insert bounce code
// Bounce marker
function makeBounce(marker) {
marker.setAnimation(google.maps.Animation.BOUNCE);
setTimeout(function(){ marker.setAnimation(null); }, 500);
}
我不确定缺少什么，但是将鼠标悬停在侧边栏链接上理论上应该使地图图标反弹一次，但没有任何反应。我已经尝试将“makeBounce（marker）”修改为“makeBounce（gmarkers）”，但这也无济于事。
对于我所做错的任何想法或建议都将不胜感激。