js代码

<script type="text/javascript">
$(window).scroll(function(){
	//控制导航
	if($(window).scrollTop()<100){
		$('#headdiv').stop().animate({"top":"0px"},200);
		$('.logo').css("padding-top","20px");
		$('.nav .mmm').css("padding-top","50px");
		$('.nav .sub').css("top","125px");
		$('.top02').css("height","95px");
		
	}else{
		$('#headdiv').stop().animate({"top":"-30px"},200);
		$('.top02').css("height","75px");
		$('.logo').css("padding-top","3px");
		$('.nav .mmm').css("padding-top","30px");
		$('.nav .sub').css("top","75px");
	}
});
</script>