(function($){$.fn.dafiScroll=function(options){var opts=$.extend({},$.fn.dafiScroll.defaults,options);return this.each(function(){var $marquee=$(this);var _scrollObj=$marquee.get(0);var scrollW=$marquee.width();var scrollH=$marquee.height();var $element=$marquee.children();var $kids=$element.children();var scrollSize=0;var _type=(opts.direction=='left'||opts.direction=='right')?1:0;$element.css(_type?'width':'height',10000);if(opts.isEqual){scrollSize=$kids[_type?'outerWidth':'outerHeight']()*$kids.length;}else{$kids.each(function(){scrollSize+=$(this)[_type?'outerWidth':'outerHeight']();});}if(scrollSize<(_type?scrollW:scrollH))return;$element.append($kids.clone()).css(_type?'width':'height',scrollSize*2);var numMoved=0;function scrollFunc(){var _dir=(opts.direction=='left'||opts.direction=='right')?'scrollLeft':'scrollTop';if(opts.loop>0){numMoved+=opts.scrollAmount;if(numMoved>scrollSize*opts.loop){_scrollObj[_dir]=0;return clearInterval(moveId);}}if(opts.direction=='left'||opts.direction=='up'){_scrollObj[_dir]+=opts.scrollAmount;if(_scrollObj[_dir]>=scrollSize){_scrollObj[_dir]=0;}}else{_scrollObj[_dir]-=opts.scrollAmount;if(_scrollObj[_dir]<=0){_scrollObj[_dir]=scrollSize;}}}var moveId=setInterval(scrollFunc,opts.scrollDelay);$marquee.hover(function(){clearInterval(moveId);},function(){clearInterval(moveId);moveId=setInterval(scrollFunc,opts.scrollDelay);});});};$.fn.dafiScroll.defaults={isEqual:true,loop:0,direction:'left',scrollAmount:1,scrollDelay:50};$.fn.dafiScroll.setDefaults=function(settings){$.extend($.fn.dafiScroll.defaults,settings);};})(jQuery);
//isEqual: true, 所有滚动的元素长宽是否相等,true,false
//loop: 0, 循环滚动次数，0时无限
//direction: 'left', 滚动方向，'left','right','up','down'
//scrollAmount: 1, 步长
//scrollDelay: 50 时长
$(function(){$('#about .scroll').dafiScroll({direction:'up',isEqual:false});});