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<form name="form1" action="?" method="post" onsubmit="return chkFrm();">

<input name="t_pt_year" type="text" size="4" maxlength="4">Äê<input name="t_pt_month" type="text" size="2" maxlength="2">ÔÂ<input name="t_pt_day" type="text" size="2" maxlength="2">ÈÕ

<input name="t_pt_hour" type="text" size="2" maxlength="2">ʱ<input name="t_pt_minute" type="text" size="2" maxlength="2">·Ö<input name="t_pt_second" type="text" size="2" maxlength="2">Ãë

<input type="submit" value="Ìá½»">

</form>

<script>

form1.t_pt_year.value = '';

form1.t_pt_month.value = '';

form1.t_pt_day.value = '';

form1.t_pt_hour.value = '';

form1.t_pt_minute.value = '';

form1.t_pt_second.value = '';

function chkFrm()

{

var reg = /^[0-9]{1,4}$/;

if(!reg.test(form1.t_pt_year.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈëÄê·Ý£¡');

  return false;

}

var reg = /^[0-9]{1,2}$/;

if(!reg.test(form1.t_pt_month.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈëÔ·ݣ¡');

  return false;

}

if(!reg.test(form1.t_pt_day.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈëÌìÊý£¡');

  return false;

}

if(!reg.test(form1.t_pt_hour.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈëСʱ£¡');

  return false;

}

if(!reg.test(form1.t_pt_minute.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈë·ÖÖÓ£¡');

  return false;

}

if(!reg.test(form1.t_pt_second.value))

{

  alert('´íÎó£ºÇëÕýÈ·ÊäÈëÃëÊý£¡');

  return false;

}

var d;

d = form1.t_pt_year.value + '-' + form1.t_pt_month.value + '-' + form1.t_pt_day.value + ' ' + form1.t_pt_hour.value + ':' + form1.t_pt_minute.value + ':' + form1.t_pt_second.value;

alert(d);

}

</script>