(function($) { var ELMS = []; $.fn.jdNewsScroll = function(settings) { settings = $.extend({}, arguments.callee.defaults, settings); $(this).each(function() { this.$settings = settings; this.$pause = false; this.$counter = (Math.floor(Math.random() * 10) * 10); $(this).hover(function() { $(this).jdNewsScrollPause(true) }, function() { $(this).jdNewsScrollPause(false) }); $('> ul', this).bind('mouseover', function(e) { if ($(e.target).is('li')) { $(e.target).addClass('hover') } }).bind('mouseout', function(e) { if ($(e.target).is('li')) { $(e.target).removeClass('hover') } }); ELMS.push(this) }); return this }; $.fn.jdNewsScroll.defaults = { delay: 0, step: 2 }; $.fn.jdNewsScrollPause = function(pause) { return this.each(function() { this.$pause = pause }) }; setInterval(scroll, 85); function scroll() { for (var i = 0; i < ELMS.length; i++) { var elm = ELMS[i]; if (elm && !elm.$pause) { if (elm.$counter == 0) { var ul = $('> ul', elm)[0]; if (!elm.$steps) { elm.$steps = $('> li:last-child', ul).outerHeight(); elm.$step = 0 } if ((elm.$steps + elm.$step) <= 0) { elm.$counter = elm.$settings.delay; elm.$steps = false; $(ul).css('top', '0').find('> li:last-child').after($('> li:first-child', ul)); $('> *', ul).not('li').remove() } else { elm.$step -= elm.$settings.step; if (-elm.$step > elm.$steps) { elm.$step = -elm.$steps } ul.style.top = elm.$step + 'px' } } else { elm.$counter-- } } } } })(jQuery);