<script type=”text/javascript” language=”javascript”>
function fTestDateTime(field) {
rx = /^((((31\/(0?[13578]|1[02]))|((29|30)\/(0?[1,3-9]|1[0-2])))\/(1[6-9]|[2-9]\d)?\d{2})|(29\/0?2\/(((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))|(0?[1-9]|1\d|2[0-8])\/((0?[1-9])|(1[0-2]))\/((1[6-9]|[2-9]\d)?\d{2})) (20|21|22|23|[0-1]?\d):[0-5]?\d$/
r = rx.test(field);
return r;
}
function fCheckCondition() {
var field=document.getElementById(“your input id”).value;
if (fTestDateTime(field)==false){
alert(‘Please insert the date as dd/mm/yyyy hh:mm’);
//return false;
} else {
document.save.submit();
//return true;
}
}
</script>