function expand() {
    var cld = document.getElementById("ctl00_cpMaster_search1_ctChild").value

    if (cld == 0) {

        document.getElementById("ctl00_cpMaster_search1_chldAge1").style.display = "none";
        document.getElementById("ctl00_cpMaster_search1_chldAge2").style.display = "none";
        document.getElementById("ctl00_cpMaster_search1_tab").style.display = "none";
     }
     if (cld == 1) {

         document.getElementById("ctl00_cpMaster_search1_chldAge1").style.display = "";
         document.getElementById("ctl00_cpMaster_search1_chldAge2").style.display = "none";
         document.getElementById("ctl00_cpMaster_search1_tab").style.display = "";
     }
     if (cld == 2) {

         document.getElementById("ctl00_cpMaster_search1_chldAge1").style.display = "";
         document.getElementById("ctl00_cpMaster_search1_chldAge2").style.display = "";
         document.getElementById("ctl00_cpMaster_search1_tab").style.display = "";
     }
   
 }