function tick(){$('#business_info ul li').removeClass("on");$('#business_info ul li:nth-child('+business_info_co+')').addClass("on");business_info_co++;if(business_info_co==(business_info_length+1)){business_info_co=1}}myVar=setInterval(function(){tick()},business_roll_time);$("#business_info ul li").mouseover(function(){$('#business_info ul li').removeClass("on");$(this).addClass("on");clearInterval(myVar)});$("#business_info ul li").mouseleave(function(){business_info_co=1;myVar=setInterval(function(){tick()},business_roll_time)});