Pop up calender

[smita]

Script for login page:

#include <IE.au3>

$oIE = _IECreate ("http://12.44.178.188/login.php",0,1,1)

$oForm = _IEFormGetCollection ($oIE, 0)

$oLogin = _IEFormElementGetObjByName($oForm, "login")

$oPass = _IEFormElementGetObjByName($oForm,"password")

$osignin = _IEFormElementGetObjByName ($oForm, "btnconnect")

$USERNAME = 'admin'

$PASSWORD = 'admin'

_IEFormElementSetValue($oLogin,$USERNAME)

_IEFormElementSetValue($oPass,$PASSWORD)

_IEAction($osignin,"click")

After login I will get main page where I have to click on pop up calender & have to select date , but I don't know how to include this in script?

Can I use mouse move & control click commands in this script?

How to get Control ID of buttons?