怎样用js实现鼠标滑过时整行变色

function overIt(){ var the_obj = event.srcElement; if(the_obj.tagName.toLowerCase() == "td"){ the_obj=the_obj.parentElement; the_obj.oBgc=the_obj.currentStyle.backgroundColor; the_obj.oFc=the_obj.currentStyle.color; the_obj.style.backgroundColor='#71BAF0'; the_obj.style.color=''; } } function outIt(){ var the_obj = event.srcElement; if(the_obj.tagName.toLowerCase() == "td"){ the_obj=the_obj.parentElement; the_obj.style.backgroundColor=the_obj.oBgc; the_obj.style.color=the_obj.oFc; the_obj.style.textDecoration=''; } }