function showElem(elem)
  {
    if (elem != null)
      elem.style.display = 'block';
  }
  function hideElem(elem)
  {
    if (elem != null)
      elem.style.display = 'none';
  }
  //show select options
	function selectBox_showOptions()
	{
		var optionDiv = document.getElementById('selectBoxOptions');
		if(optionDiv.style.display=='block'){
			hideElem(optionDiv);
		}else{			
			showElem(optionDiv);
		}
	}
	//select option value
	function selectOptionValue(src, destname)
	{
		var dest = document.getElementById(destname);
    if (dest != null)
      dest.value = src.innerHTML;
		hideElem(src.parentNode);	
	}
	//highlights option
	function highlightOption(obj)
	{
		if(obj.style.backgroundColor=='#AAAAAA'){
			obj.style.backgroundColor='';
			obj.style.color='';
		}else{
			obj.style.backgroundColor='#AAAAAA';
			obj.style.color='#FFF';			
		}	
		if(activeOption){
			activeOption.style.backgroundColor='';
			activeOption.style.color='';			
		}
		activeOption = obj;
	}
	function createEditableSelect()
	{
		var optionDiv = document.getElementById('selectBoxOptions');
    hideElem(optionDiv);
	}
  var activeOption;