var req;
var response;
function getRequest(){
  if (window.XMLHttpRequest) {
       req = new XMLHttpRequest();
   } else if (window.ActiveXObject) {
       req = new ActiveXObject("Microsoft.XMLHTTP");
   }
}
function getResponse(url){
   getRequest();
   req.open("GET", url, true);
   req.onreadystatechange = run;
   req.send(null);
}
   function run(){
    if (req.readyState == 4) {
           if (req.status == 200) {
   response = eval('(' + req.responseText + ')');
   processResponse();
           }
    }
   }
  function processListObj(listObj){ 
 
      var frm=document.forms[listObj.targetForm]; 
      enableFormElements(frm); 
      var lItem=frm[listObj.targetName]; 
      clearList(lItem); 
      var optns=listObj.targetValue; 
      for (x in optns){ 
        addList (x,lItem,optns[x]); 
      } 
   } 
 
   function clearList(listItem){ 
   listItem.options.length=0; 
   } 
   function addList(i,LItem,optn){ 
   LItem.options[i]=new Option(optn.value, optn.name); 
   }
function enableFormElements(frm){ 
      for (var x=0; x<frm.length; x++){ 
              frm.elements[x].disabled=false; 
         } 
 }
function disableFormElements(frm){ 
      for (var x=0; x<frm.length; x++){ 
              frm.elements[x].disabled=true; 
         } 
 }
function processResponse(){ 
   for (x in response){ 
     if (x == "listItem"){ 
         processListObj(response[x]); 
     } 
   } processLocalResponse(); 
 }
 function processLocalResponse(){ 
 trm=document.schdform.pv_term.value; 
 dept=document.schdform.pv_dept.value; 
 college=document.schdform.pv_college.value; 
 if ( trm==null || trm=="" ) { 
 document.schdform.pv_pterm.disabled=true;
 document.getElementById("select_id").disabled=true;
   } 
 else if ( (college==null || college=="") & (dept==null || dept=="") ) { 
 document.getElementById("select_id").disabled=true;
  } else { 
 document.getElementById("select_id").disabled=false;
  } 
} 
function localSubmit(btn){ 
 btn.disabled=true; 
 document.schdform.submit(); 
return; 
 } 
function localFunc(obj){ 
disableFormElements(document.schdform); 
 getResponse("lwskdsch.p_dyna_search?param="+obj.name+"~"+document.schdform.pv_term.value+"~"+document.schdform.pv_pterm.value+"~"+document.schdform.pv_campus.value+"~"+document.schdform.pv_college.value+"~"+document.schdform.pv_dept.value); 
 } 
 function processPtermLocalResponse(){ 
 trm=document.schdform.pv_term.value; 
 ptrm=document.schdform.pv_pterm.value; 
 if ( trm.match(/05$/) ) { 
      document.getElementById("pterm_id").disabled=false; 
   } else { 
 document.getElementById("pterm_id").disabled=true;
  } 
}