def get_leads_data( session, lead_type ):
    if lead_type == "Need Call":
        params = {
            "ctl00$cph1$filter_Status": "Need Call",
            "__EVENTTARGET": "ctl00$cph1$perPage",
            "__EVENTARGUMENT": "",
        }
    elif lead_type == "Cold Leads":
        params = {
            "__EVENTTARGET": "clickSG",
            "__EVENTARGUMENT": "Cold Leads",
            "ctl00$cph1$filter_Status": "Need Call"
        }
    else:
        raise Exception( "Invalid lead type specified!" )