/* ================================================================== */
/* retrieve an XML "instrument" descriptor file. This is an XML file with a particular structure (see lookupNodeVar for details)
   Will read the "ith" array element from instList, where instList is created by displayInstrumentTable.
   Typically, this is called after a click on a link.
   After reading XML file (using ajax), extract the name and description nodes. 
*/
function getInstrumentDescription(ith,ido) {

  var uu0,uu,tm2;
  var aname,adesc,iname,idesc,icurrent,tmp,isessid ;
  if (arguments.length<2) ido=0 ;

 if (ido==0) {
    var toget=getInstrumentURL+instList[ith];
    Get_xmlFile(toget,'instNode','retrieving xml instrument file ','getInstrumentDescription',ith,2,instList[ith]) ;
    return 0;
  }
  if (ido==2) {
      currentInst=ith ;                             // set the current instrument global
      instName= strip(lookupNodeVar(instNode,'name'));
      instDesc= lookupNodeVar(instNode,'DESCRIPTION');
     idesc=document.getElementById('selectedInstrumentDesc');
     idesc.innerHTML=instDesc; 
     icurrent=document.getElementById('currentInst');
     tmp=instList[ith].replace(/\..*/,'');tmp=makeProjName(tmp);
//     icurrent.setAttribute('value',instList[ith].replace(/\..*/,''));
     icurrent.setAttribute('value',tmp);
    icurrent.style.color='darkred';
     icurrent=document.getElementById('currentInst2');

     isessid=document.getElementById('sessionName');
     if (isessid) isessid.style.backgroundColor='#fefefe';

     isessid=document.getElementById('sessionProject');
     if (isessid) isessid.style.backgroundColor='#fefefe';
 
     uu0=instList[ith].replace(/\..*/,'')
     uu=extractProjectName(uu0);
     tmp2=makeProjName(uu0);
     icurrent.innerHTML=' <u>'+makeProjName(tmp2)+'</u> ';
      iname=document.getElementById('selectedInstrumentName');
      iname.innerHTML='<span onClick="showInstrumentDetails()" style="color:blue;text-decoration:underline" id="dname2">'+makeProjName(instName)+'</span>' ;
 
// supress readonly on sessionName (if it exists)
     tmp=document.getElementById('sessionName');
     if (tmp) {
        tmp.setAttribute('readOnly',false);
        tmp.readOnly=false;
        if (tmp.title==''){
            tmp.title='Enter session name here ';
            tmp.setAttribute('title','Enter session name here ');
        }
     }
// supress readonly on sessionProject (if it exists)
     tmp=document.getElementById('sessionProject');
     if (tmp) {
        tmp.setAttribute('readOnly',false);
        tmp.readOnly=false;
        if (tmp.title==''){
          tmp.title="Enter the session's project here ";
          tmp.setAttribute('title',"Enter the session's project here ");
        }
        tmp.value=uu[1]; 
       }

     tmp=document.getElementById('doit');
     if (tmp) {
        tmp.setAttribute('readOnly',false);
        tmp.readOnly=false;
        tmp.title='Click here to create the new session ';
        tmp.setAttribute('title','Click here to create the new session ');
      }


     return 1 ;
  }
}