/*!
 * liScroll 1.0
 * Examples and documentation at: 
 * http://www.gcmingati.net/wordpress/wp-content/lab/jquery/newsticker/jq-liscroll/scrollanimate.html
 * 2007-2009 Gian Carlo Mingati
 * Version: 1.0.1 (07-DECEMBER-2009)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 * Requires:
 * jQuery v1.2.x or later
 * 
 */

jQuery.fn.liScroll = function(settings) {
        settings = jQuery.extend({
            travelocity: 0.07,
            extraWidth:1
        }, settings);
        
        return this.each(function(){
            
            var $strip = jQuery(this);
            $strip.addClass("newsticker")
            var stripWidth = 0;
            var $mask = $strip.wrap("<div class='mask'></div>");
            var $tickercontainer = $strip.parent().wrap("<div class='tickercontainer'></div>");                                
            var containerWidth = $strip.parent().parent().width();    //a.k.a. 'mask' width     
            
            $strip.find("li").each(function(i){
                stripWidth += jQuery(this, i).width();
            });
            $strip.width(stripWidth);            
                                                          
            var totalTravel = stripWidth+containerWidth + settings.extraWidth;
            var defTiming = totalTravel/settings.travelocity;    // thanks to Scott Waye        

            function scrollnews(spazio, tempo){
                $strip.animate({left: '-='+ spazio}, tempo, "linear", function(){
                    $strip.css("left", containerWidth); scrollnews(totalTravel, defTiming);});
            }
            scrollnews(totalTravel, defTiming);                
            $strip.hover(function(){
                jQuery(this).stop();
            },
            function(){
                var offset = jQuery(this).offset();
                var residualSpace = offset.left + stripWidth;
                var residualTime = residualSpace/settings.travelocity;
                scrollnews(residualSpace, residualTime);
            });            
        });    
};