javascript <select

the parameter obj, devobj are object, not string

 

function to2(obj,devobj)
{
 var tmp = obj.id;
 var deviceid = devobj.id;
 idlistbox = tmp.substring(0,(tmp.length-1));
 var list1 = document.getElementById(idlistbox+'1');
 var list2 = document.getElementById(idlistbox+'2');
 
 //get device description
 var device = document.getElementById(deviceid);
 var deviceDes = device.options[device.selectedIndex].text;
 
 var indice1 = list1.selectedIndex;
 var sizeList2 = list2.length;
 if (indice1 < 0)
 {
     alert(document.getElementById("nullselected").value);
     return;
    }
     
    var a = list1.options[indice1];
    var b = list2.options[sizeList2];
    var iscontained = false;
    for (i=0;i<sizeList2;i++)
    {
     if (list2.options[i].value==a.value)
     {
      alert(document.getElementById("doubleElement").value);
      iscontained = true;
      break;
     }
 }
   
    if (iscontained==false)
    {
     try
     {
   var oOption = document.createElement("OPTION");
   oOption.text=deviceDes+"->"+a.text;
   oOption.value=a.value;;
   list2.add(oOption,b);
      list1.remove(indice1);
  }
     catch (e1)
     {
   var oOption = document.createElement("OPTION");
   oOption.text=deviceDes+"->"+a.text;
   oOption.value=a.value;;
   list2.add(oOption);
      list1.remove(indice1);
     }
     list2.selectedIndex=sizeList2;
     list2.focus();
 } 
}