function showHide(id) 
{
   var e = document.getElementById(id);
   if(e.style.display == 'block')
      e.style.display = 'none';
   else
      e.style.display = 'block';
}

function show(id) 
{
   var e = document.getElementById(id);
   e.style.display = '';
}

function hide(id) 
{
   var e = document.getElementById(id);
   e.style.display = 'none';
}

function dropDownRemoveItems(ddl)
{
    ddl.innerHTML = '';
}

function dropDownAddItem(ddl, text, value)
{
     var newOption = document.createElement("option");
     newOption.text = text;
     newOption.value = value;
     ddl.options.add(newOption);
}