JavaScript - galería con javascript

   
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galería con javascript

Publicado por maria (1 intervención) el 22/06/2011 15:48:54
hola tengo un problema con una galería en javascript. La galería de imágenes funciona con dos botones de prev y next pero cuando llega a la última imagen me gustaría que volviera a empezar la galería y no que se quedara ahí y que haya que vovler para atrás.
Hay alguna manera de hacerlo esto?

este es el código de mi galería en html:

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Documento sin t&iacute;tulo</title>
<link href="estilos.css" rel="stylesheet" type="text/css" />
<script src="Scripts/AC_RunActiveContent.js" type="text/javascript"></script>
</head>

<body>
<div id="galeria_iframe">
<div id="galeria_fotos">
<div id="foto"><img id=pic></div>
<div id="izquierda">
<a onclick="prev()"></a>
</div>
<div id="derecha">
<a onclick="slideshow()"></a>
</div>
<script language=javascript>
var width = 500;
var height = 400;
var imgAr1 = new Array();
var rImg1 = new Array();

imgAr1[0] = "con_xxx_01.jpg";
imgAr1[1] = "con_xxx_02.jpg";
imgAr1[2] = "con_xxx_03.jpg";
imgAr1[3] = "con_xxx_04.jpg";
</script>

<script language=javascript>
for(var j = 0; j < imgAr1.length; j++)
{
rImg1[j] = new Image();
rImg1[j].src = imgAr1[j];
}

document.onload = setting();
var slide;
function setting()
{
slide = document.getElementById('pic');
slide.src = imgAr1[0];
slide.setAttribute("width",width);
slide.setAttribute("height",height);
}
var picture = 0;
function slideshow(){
if(picture < imgAr1.length-1){
picture=picture+1;
slide.src = imgAr1[picture];
}
}
function prev(){
if(picture > 0 ){
picture=picture-1;
slide.src = imgAr1[picture];
}
}
function start(){
slide.src = imgAr1[0];
picture = 0;
}
function end(){
slide.src = imgAr1[imgAr1.length-1];
picture = imgAr1.length-1
}
</script>
</div>
</div>
<div id="galeria_textos">
<h1>Shopping Tres Cruces</h1>
<p>(Concurso realizado por CP)</p>
<p>Rediseño de plaza de comidas.</p>
</div>
</div>
</body>
</html>

y este es el java:

var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

function ControlVersion()
{
var version;
var axo;
var e;

// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

try {
// version will be set for 7.X or greater players
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
version = axo.GetVariable("$version");
} catch (e) {
}

if (!version)
{
try {
// version will be set for 6.X players only
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");

// installed player is some revision of 6.0
// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
// so we have to be careful.

// default to the first public version
version = "WIN 6,0,21,0";

// throws if AllowScripAccess does not exist (introduced in 6.0r47)
axo.AllowScriptAccess = "always";

// safe to call for 6.0r47 or greater
version = axo.GetVariable("$version");

} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 4.X or 5.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
version = axo.GetVariable("$version");
} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 3.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
version = "WIN 3,0,18,0";
} catch (e) {
}
}

if (!version)
{
try {
// version will be set for 2.X player
axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
version = "WIN 2,0,0,11";
} catch (e) {
version = -1;
}
}

return version;
}

// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
// NS/Opera version >= 3 check for Flash plugin in plugin array
var flashVer = -1;

if (navigator.plugins != null && navigator.plugins.length > 0) {
if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
var descArray = flashDescription.split(" ");
var tempArrayMajor = descArray[2].split(".");
var versionMajor = tempArrayMajor[0];
var versionMinor = tempArrayMajor[1];
var versionRevision = descArray[3];
if (versionRevision == "") {
versionRevision = descArray[4];
}
if (versionRevision[0] == "d") {
versionRevision = versionRevision.substring(1);
} else if (versionRevision[0] == "r") {
versionRevision = versionRevision.substring(1);
if (versionRevision.indexOf("d") > 0) {
versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
}
}
var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
}
}
// MSN/WebTV 2.6 supports Flash 4
else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
// WebTV 2.5 supports Flash 3
else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
// older WebTV supports Flash 2
else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
else if ( isIE && isWin && !isOpera ) {
flashVer = ControlVersion();
}
return flashVer;
}

// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
versionStr = GetSwfVer();
if (versionStr == -1 ) {
return false;
} else if (versionStr != 0) {
if(isIE && isWin && !isOpera) {
// Given "WIN 2,0,0,11"
tempArray = versionStr.split(" "); // ["WIN", "2,0,0,11"]
tempString = tempArray[1]; // "2,0,0,11"
versionArray = tempString.split(","); // ['2', '0', '0', '11']
} else {
versionArray = versionStr.split(".");
}
var versionMajor = versionArray[0];
var versionMinor = versionArray[1];
var versionRevision = versionArray[2];

// is the major.revision >= requested major.revision AND the minor version >= requested minor
if (versionMajor > parseFloat(reqMajorVer)) {
return true;
} else if (versionMajor == parseFloat(reqMajorVer)) {
if (versionMinor > parseFloat(reqMinorVer))
return true;
else if (versionMinor == parseFloat(reqMinorVer)) {
if (versionRevision >= parseFloat(reqRevision))
return true;
}
}
return false;
}
}

function AC_AddExtension(src, ext)
{
if (src.indexOf('?') != -1)
return src.replace(/\?/, ext+'?');
else
return src + ext;
}

function AC_Generateobj(objAttrs, params, embedAttrs)
{
var str = '';
if (isIE && isWin && !isOpera)
{
str += '<object ';
for (var i in objAttrs)
{
str += i + '="' + objAttrs[i] + '" ';
}
str += '>';
for (var i in params)
{
str += '<param name="' + i + '" value="' + params[i] + '" /> ';
}
str += '</object>';
}
else
{
str += '<embed ';
for (var i in embedAttrs)
{
str += i + '="' + embedAttrs[i] + '" ';
}
str += '> </embed>';
}

document.write(str);
}

function AC_FL_RunContent(){
var ret =
AC_GetArgs
( arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
, "application/x-shockwave-flash"
);
AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_SW_RunContent(){
var ret =
AC_GetArgs
( arguments, ".dcr", "src", "clsid:166B1BCA-3F9C-11CF-8075-444553540000"
, null
);
AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
var ret = new Object();
ret.embedAttrs = new Object();
ret.params = new Object();
ret.objAttrs = new Object();
for (var i=0; i < args.length; i=i+2){
var currArg = args[i].toLowerCase();

switch (currArg){
case "classid":
break;
case "pluginspage":
ret.embedAttrs[args[i]] = args[i+1];
break;
case "src":
case "movie":
args[i+1] = AC_AddExtension(args[i+1], ext);
ret.embedAttrs["src"] = args[i+1];
ret.params[srcParamName] = args[i+1];
break;
case "onafterupdate":
case "onbeforeupdate":
case "onblur":
case "oncellchange":
case "onclick":
case "ondblClick":
case "ondrag":
case "ondragend":
case "ondragenter":
case "ondragleave":
case "ondragover":
case "ondrop":
case "onfinish":
case "onfocus":
case "onhelp":
case "onmousedown":
case "onmouseup":
case "onmouseover":
case "onmousemove":
case "onmouseout":
case "onkeypress":
case "onkeydown":
case "onkeyup":
case "onload":
case "onlosecapture":
case "onpropertychange":
case "onreadystatechange":
case "onrowsdelete":
case "onrowenter":
case "onrowexit":
case "onrowsinserted":
case "onstart":
case "onscroll":
case "onbeforeeditfocus":
case "onactivate":
case "onbeforedeactivate":
case "ondeactivate":
case "type":
case "codebase":
case "id":
ret.objAttrs[args[i]] = args[i+1];
break;
case "width":
case "height":
case "align":
case "vspace":
case "hspace":
case "class":
case "title":
case "accesskey":
case "name":
case "tabindex":
ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
break;
default:
ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
}
}
ret.objAttrs["classid"] = classid;
if (mimeType) ret.embedAttrs["type"] = mimeType;
return ret;
}

si alguien me puede ayudar les agradezco mucho!
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