<script language=javascript>
function dis()
{
var a = document.getElementsByTagName("input");
for (var i=0; i<a.length; i++)
{
if (a[i].type=="checkbox" || a[i].type=="radio") a[i].disabled=true;
}
var b = document.getElementsByTagName("select");
for (var i=0; i<b.length; i++)
{
b[i].disabled=true;
}
}
</script>
<input type=button value=失效 onclick=dis()>