//menu
$(document).ready(function(){
  
  $('li.mainlevel').mousemove(function(){
  $(this).find('ul').slidedown("1000");//you can give it a speed
  });
  $('li.mainlevel').mouseleave(function(){
  $(this).find('ul').slideup("fast");
  });
  
});



$(function(){
	$('#close_im').bind('click',function(){
		$('#main-im').css("height","0");
		$('#im_main').hide();
		$('#open_im').show();
	});
	$('#open_im').bind('click',function(e){
		$('#main-im').css("height","272");
		$('#im_main').show();
		$(this).hide();
	});
	$('.go-top').bind('click',function(){
		$(window).scrolltop(0);
	});
	$(".weixing-container").bind('mouseenter',function(){
		$('.weixing-show').show();
	})
	$(".weixing-container").bind('mouseleave',function(){        
		$('.weixing-show').hide();
	});
});