求一套 自己编写的php+mysql的商城系统，方便二次开发的，不要ecshop shopex之类的

 在不了解您的网站结构的情况下，很难解释 
 
 从现在开始，你必须将'margin / padding'放到内容栏中以便下推。 
 
 因为其他方面，当下拉菜单出现时，您的菜单会变得不稳定。 
 
 使用他们的基于事件的api。 见下文 
 
$('#myDropdown').on('show.bs.dropdown', function () {
     // this part will be trigged when dropdown is called

     // add margin / padding to your adsense container
})
 
 要获得动态高度， 
 
$('#myDropdown').on('shown.bs.dropdown', function () {
     // this part will be trigged after dropdown is shown

     // Grab height of dropdown
     var height = $('.dropdown').outerHeight();
})
 
 而且，我实际上没有尝试过上面的任何代码，但它应该可行。 =） 

Without knowing your site structure, it's hard to explain
 
From top of my head right now, you will have to put 'margin/padding' to your content bar to be pushed down.
 
Because other wise your menu will get wonky when dropdown menu appears.
 
Use their event based api. see below
 
$('#myDropdown').on('show.bs.dropdown', function () {
     // this part will be trigged when dropdown is called

     // add margin / padding to your adsense container
})
 
To get the dynamic height, 
 
$('#myDropdown').on('shown.bs.dropdown', function () {
     // this part will be trigged after dropdown is shown

     // Grab height of dropdown
     var height = $('.dropdown').outerHeight();
})
 
And again, I haven't actually tried any of the codes above, but it should work. =)