实现代码一:<script src="http://www.cn76.com/js/search.js"></script>
实现代码二:<script>
<!--//Begin JavaScript Source
function CheckAll(form)
{
for (var i=0;i<form.elements.length;i++)
{
var e = form.elements[i];
if (e.name != 'chkall')
e.checked = form.chkall.checked;
}
}
function netsearch(formname)
{
var Sina1
var Sina2

