Ecco qui una working copy:
codice:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var currentPosition = 0;
var slideWidth = 560;
var slides = $('.slide');
var numberOfSlides = slides.length;
// Remove scrollbar in JS
$('#slidesContainer').css('overflow', 'hidden');
// Wrap all .slides with #slideInner div
slides
.wrapAll('<div id="slideInner"></div>')
// Float left to display horizontally, readjust .slides width
.css({
'float' : 'left',
'width' : slideWidth
});
// Set #slideInner width equal to total width of all slides
$('#slideInner').css('width', slideWidth * numberOfSlides);
// Insert controls in the DOM
$('#slideshow')
.prepend('<span class="control" id="leftControl">Clicking moves left</span>')
.append('<span class="control" id="rightControl">Clicking moves right</span>');
// Hide left arrow control on first load
//manageControls(currentPosition); //commento la riga che cancella la freccia sinistra al caricamento della pagina
// Create event listeners for .controls clicks
$('.control')
.bind('click', function(){
// Determine new position
//currentPosition = ($(this).attr('id')=='rightControl') ? currentPosition+1 : currentPosition-1;
//rendo lo slider circolare
if($(this).attr('id')=='rightControl'){//al click sulla freccia destra
if(currentPosition==numberOfSlides-1){//se siamo sull'ultima slide
currentPosition=0;
}else{//altrimenti
currentPosition=currentPosition+1;//vado alla slide successiva
}
}else{//freccia sinistra
if(currentPosition==0){//se siamo sulla prima slide
currentPosition=numberOfSlides-1;//vado all'ultima
}else{//altrimenti
currentPosition=currentPosition-1;//vado alla slide precedente
}
}
// Hide / show controls
//manageControls(currentPosition); //le frecce saranno sempre visibili
// Move slideInner using margin-left
$('#slideInner').animate({
'marginLeft' : slideWidth*(-currentPosition)
});
});
// manageControls: Hides and Shows controls depending on currentPosition
function manageControls(position){
// Hide left arrow if position is first slide
if(position==0){ $('#leftControl').hide() } else{ $('#leftControl').show() }
// Hide right arrow if position is last slide
if(position==numberOfSlides-1){ $('#rightControl').hide() } else{ $('#rightControl').show() }
}
});
</script>