js滚动条平滑移动示例代码_javascript技巧

* { 
 margin:0px; 
 padding:0px; 
} 
#back { 
 position: absolute; 
 width: 100%; 
 top: 0px; 
 left: 0px; 
 z-index: 1; 
 background-image: url('../Images/psbg/bg7.png'); 
} 
#container{ 
 position:absolute; 
 width:100%; 
 top:0px; 
 left:0px; 
 z-index:100; 
 overflow:auto; 
} 
#main{ 
 position:absolute; 
 width:100%; 
 top:0px; 
 left:0px; 
} 
.d{ 
 margin-top:50px; 
} 
#bt{ 
 position:absolute; 
 top:0; 
 right:50px; 
 z-index:200; 
}