/*!
 * 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.liScrollTicker = function(settings) {
		settings = jQuery.extend({
		travelocity: 0.1,
		direction: 'left'
		}, 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()+45;
				});
				$strip.width(stripWidth);	
				var totalTravel = stripWidth+containerWidth;
				var defTiming = totalTravel/settings.travelocity;	// thanks to Scott Waye
				$strip.find("li").each(function(i){
			        var clone = jQuery(this, i).clone();
			        clone.removeClass('first');
			        var parent = jQuery(this, i).parent();
			        parent.width(parent.width()+jQuery(this, i).width()+50);
				});
				function scrollnews(spazio, tempo){
				    if(settings.direction == 'left') {
				        $strip.animate({left: '-='+ spazio}, tempo, "linear", function(){
				            $strip.css("left", containerWidth);
				            var offset = jQuery($strip).offset();
				            var residualSpace = offset.left + stripWidth;
				            var residualTime = residualSpace/settings.travelocity;
				            defTiming = residualTime;
				            scrollnews(residualSpace, residualTime);
				        });
				    } else {
    				    $strip.animate({left: containerWidth}, tempo, "linear", function(){
    				        $strip.css("left", -stripWidth);
    				        var offset = jQuery($strip).offset();
				            var residualSpace = containerWidth - offset.left;
				            var residualTime = residualSpace/settings.travelocity;
				            defTiming = residualTime;
				            scrollnews(residualSpace, residualTime);
    				    });
				    }
				}
				if(settings.direction == "right") {
				    $strip.css("left", -stripWidth);
				}
				scrollnews(totalTravel, defTiming);				
				$strip.hover(function(){
				jQuery(this).stop();
				},
				function(){
				var offset = jQuery(this).offset();
				var residualSpace = offset.left + stripWidth;
				var residualTime = residualSpace/settings.travelocity;
				defTiming = residualTime;
				scrollnews(residualSpace, residualTime);
				});
				jQuery('.sublinks .plus').click(function() {
				    settings.travelocity += 0.05;
				    jQuery($strip).stop();
				    var offset = jQuery($strip).offset();
				    var residualSpace;
				    if(settings.direction == "left") {
				        residualSpace = offset.left + stripWidth;
				    } else {
				        residualSpace = containerWidth - offset.left;
				    }
				    var residualTime = residualSpace/settings.travelocity;
				    defTiming = residualTime;
				    scrollnews(residualSpace, residualTime);
				});	
				jQuery('.sublinks .minus').click(function() {
				    settings.travelocity -= 0.05;
				    if(settings.travelocity < 0) {
				        settings.travelocity = 0.0;
				    }
				    jQuery($strip).stop();
				    var offset = jQuery($strip).offset();
				    var residualSpace;
				    if(settings.direction == "left") {
				        residualSpace = offset.left + stripWidth;
				    } else {
				        residualSpace = containerWidth - offset.left;
				    }
				    var residualTime = residualSpace/settings.travelocity;
				    defTiming = residualTime;
				    scrollnews(residualSpace, residualTime);
				});	
				jQuery('.sublinks .prev').click(function() {
				    settings.direction = "left";
				    jQuery($strip).stop();
				    var offset = jQuery($strip).offset();
				    var residualSpace = offset.left + stripWidth;
				    var residualTime = residualSpace/settings.travelocity;
				    defTiming = residualTime;
				    scrollnews(residualSpace, residualTime);
				});	
				jQuery('.sublinks .next').click(function() {
				    settings.direction = "right";
				    jQuery($strip).stop();
				    var offset = jQuery($strip).offset();
				    var residualSpace = containerWidth - offset.left;
				    var residualTime = residualSpace/settings.travelocity;
				    defTiming = residualTime;
				    scrollnews(residualSpace, residualTime);
				});					
		});
};