Javascript 高亮 当前行

function highlighttr(color){var trs=document.getElementsByTagName('tr');for(var x=0;x<trs.length;x++){var tr=trs[x];var oldColor=tr.style.backgroundColor;tr.onmouseover=function(){this.style.backgroundColor=color;}tr.onmouseout=function(){this.style.backgroundColor=oldColor;}}}

window.onload=function(){highlighttr('#9cf');}