上下选择
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title></title><style type="text/css">html,body,div,a{padding:0;margin:0;}#d{ width:300px; margin:0 auto; border:1px solid #3366FF}#d a{ text-align:center;;width:300px; color:#000000; text-decoration:none; height:24px; line-height:24px; display:block}#d a:hover{ background-color:#FF6600}</style><script type="text/javascript">function domLocation(node){ var left , top , right , bottom; left = top = right = bottom = 0; var n = node; while (n) { left += n.offsetLeft, top += n.offsetTop; n = n.offsetParent; }; right = left + node.offsetWidth; bottom = top + node.offsetHeight; return {"left":left,"right":right,"top":top,"bottom":bottom,"width":node.offsetWidth,"height":node.offsetHeight} } function getEvent(){ //同时兼容ie和ff的写法 if(document.all) return window.event; func=getEvent.caller; while(func!=null){ var arg0=func.arguments[0]; if(arg0){ if((arg0.constructor==Event || arg0.constructor ==MouseEvent) || (typeof(arg0)=="object" && arg0.preventDefault && arg0.stopPropagation)){ return arg0; } } func=func.caller; } return null; } var g = function(id){return "string" == typeof id ? document.getElementById(id) : id;}, c = function(tagName){return document.createElement(tagName);},apc = function(o,po){ (po || document.body).appendChild(o);};function isF60(a){var bgc = a.currentStyle ? a.currentStyle["backgroundColor"] : window.getComputedStyle(a, null)["backgroundColor"];if(bgc.toLowerCase() == "#ff6600" || ("rgb(255,102,0)" == bgc.replace(/\s+/ig,"")))return true;else return false;}var cs,idxfunction toggelKey(upDownFlag){var f60flag = false;for(var i = 0; i < cs.length; i++){if(isF60(cs[i])){f60flag = true;idx = upDownFlag ? i-1 : i+1;}cs[i].style.backgroundColor = "";}if((!f60flag || idx == -1) && upDownFlag) idx = cs.length-1;else if((!f60flag || idx == cs.length) && !upDownFlag) idx = 0;cs[idx].style.backgroundColor = "#ff6600";}function ku(){var e = getEvent();if(e.keyCode == 38) toggelKey(true);else if(e.keyCode == 40) toggelKey(false);else if(e.keyCode == 13) cs[idx].focus();}window.onload = function(){cs = g("d").childNodes}</script></head><body><input type="text" onkeyup="ku()"><div id="d"><a href="javascript:" onfocus="alert(1)">1111111</a><a href="javascript:" onfocus="alert(2)">2222222</a><a href="javascript:" onfocus="alert(3)">3333333</a><a href="javascript:" onfocus="alert(4)">4444444</a><a href="javascript:" onfocus="alert(5)">5555555</a></div></body></html>