/*
 * jQuery Slideshow Plugin v1.3
 * Author: Matt Oakes
 * URL: http://www.matto1990.com/jquery/slideshow/
 *
 * Modifications by Meinhard Benn (http://benn.org/):
 *  - fadetime setting
 */

jQuery.fn.slideshowOfertas = function(options) {
    var settings = {
        fadetime: 'slow',
        timeout: '2000',
        type: 'sequence',
        pauselink: null,
        playcallback: null,
        pausecallback: null
    };
    if (options) {
        jQuery.extend(settings, options);
    }
    
    var    pauseState = 0,
        current = 1,
        last = 0,
        timer = '';
    
    var change = function () {
        if ( pauseState == 0 ) {
            for (var i = 0; i < slides.length; i++) {
                jQuery(slides[i]).css('display', 'none');
                jQuery(spans[i]).css('display', 'none');
            }
            
            jQuery(slides[last]).css('display', 'block').css('zIndex', '0');
            jQuery(spans[last]).css('display', 'block').css('zIndex', '-999');  
            
            jQuery(slides[current]).css('zIndex', '1').fadeIn(settings.fadetime);
            jQuery(spans[current]).css('zIndex', '2').fadeIn(settings.fadetime);
            
            if ( settings.type == 'sequence' ) {
                if ( ( current + 1 ) < slides.length ) {
                    current = current + 1;
                    last = current - 1;
                }
                else {
                    current = 0;
                    last = slides.length - 1;
                }
            }
            else if ( settings.type == 'random' ) {
                last = current;
                while (    current == last ) {
                    current = Math.floor ( Math.random ( ) * ( slides.length ) );
                }
            }
            else {
                alert('type must either be \'sequence\' or \'random\'');
            }
            timer = setTimeout(change, settings.timeout);
        }
    };
    
    var pause = function() {
        if ( pauseState == 0 ) {
            pauseState = 1;
            clearTimeout(timer);
            if ( settings.playcallback != null ) {
                settings.pausecallback(jQuery('#' + settings.pauselink));
            }
        }
        else {
            pauseState = 0;
            change();
            if ( settings.playcallback != null ) {
                settings.playcallback(jQuery('#' + settings.pauselink));
            }
        }
        return false;
    };
    
    this.css('position', 'relative');
    var slides = this.find('img').get();
    var spans = this.find('div.galleryTextOfertasBottom').get();
    
    ultimo = slides.length;
    
    jQuery.each(slides, function(i){
        jQuery(slides[i]).css('zIndex', slides.length - i).css('position', 'absolute').css('top', '0').css('left', '0');
        jQuery(spans[i]).css('zIndex', slides.length - i);
        
        if(0 == i)
        {
            jQuery(spans[i]).css('zIndex', '9999').css('display', 'block');
        }
    });
    
    if ( settings.type == 'sequence' ) {
        timer = setTimeout(change, settings.timeout);
    }
    else if ( settings.type == 'random' ) {
        do {
            current = Math.floor ( Math.random ( ) * ( slides.length ) );
        } while ( current == 0 );
        timer = setTimeout(change, settings.timeout);
    }
    else {
        alert('type must either be \'sequence\' or \'random\'');
    }
    
    if ( settings.pauselink != null ) {
        jQuery('#' + settings.pauselink).click(pause);
    }
    
    return this;
};