键选专题
js实现鼠标选择/键选下拉菜单
<!doctype html><html lang="en"><head><meta charset="UTF-8"><title>下拉菜单</title><style type="text/css">body,ul,li{ margin:0; padding:0; font-size:13px;}ul,li{list-style:none;}#divselect{width:186px; m