.a1 { width:300px; height:190px; border:1px solid #f00; overflow:auto; }
.dumascroll {}		/*只需对需要渲染滚动条的div设置该class即可*/
.dumascroll_area {
height:100%;
overflow:hidden;
}
.dumascroll_bar,.dumascroll_handle,.dumascroll_handle_a,.dumascroll_arrow_up,.dumascroll_arrow_up_a,.dumascroll_arrow_down,.dumascroll_arrow_down_a {
background-image:url(p_scrool.gif);
}
.dumascroll_bar {
position:absolute;
top:0;
right:0;
z-index:9;
width:10px;
height:100%;
cursor:default;
-moz-user-select:none;
-khtml-user-select:none;
user-select:none;
background-repeat:repeat-y;
background-position:-30px 0;
float:left;
}
.dumascroll_arrow_up,.dumascroll_arrow_up_a,.dumascroll_handle,.dumascroll_handle_a,.dumascroll_arrow_down,.dumascroll_arrow_down_a {
position:absolute;
left:0;
}
.dumascroll_arrow_up,.dumascroll_arrow_up_a,.dumascroll_arrow_down,.dumascroll_arrow_down_a {
width:100%;
height:4px;
color:#fff;
text-align:center;
}
.dumascroll_arrow_up,.dumascroll_arrow_up_a { top:0; }
.dumascroll_arrow_down,.dumascroll_arrow_down_a { bottom:0; }
.dumascroll_handle,.dumascroll_handle_a { width:100%; background-repeat:repeat-y; }
.dumascroll_arrow_up { background-position:0 0; }
.dumascroll_arrow_up_a { background-position:-10px 0; }
.dumascroll_handle { background-position:-20px 0; }
.dumascroll_handle_a { background-position:-40px 0; }
.dumascroll_arrow_down { background-position:-50px 0; }
.dumascroll_arrow_down_a { background-position:-60px 0; }

.dumascroll_handle,.dumascroll_handle_a{border-top:0px #000 solid;border-bottom:0px #000 solid;}