<script Language="vbscript">
sub check()
c=document.form1.page.value
if c<>"" then
if not IsNumeric(c) then
msgbox " 页数只能输入数字"
document.form1.page.select()
exit sub
else

end if
else
msgbox"请输入想要转到页数"
document.form1.page.select()
exit sub
end if

document.form1.submit()
end sub
</script>

<script language="javascript">
function check()
{
var c = document.form1.page.value;
var num = /^\d+$/
if(c!="")
{
if(!num.exec(document.form1.page.value))
{
alert("页数只能输入数字");
document.form1.page.select();
return false;
}
}
else
{
alert("请输入想要转到页数");
document.form1.page.select();
return false;
}
return true;
}
</script>

谢谢了