//-------------------------------------------------
// submits a netui form if an option in the select 
// has been selected. 
//
//-------------------------------------------------
function submitFormIfOptionSelected(formname, field) 
{   
    formTagName = getNetuiTagName(formname);
    formObj = getDocumentObjectById(formTagName);
    
    if ( ( formObj != null) && 
         ( formObj[getNetuiTagName(field)] != null ))
         {
          var value = formObj[getNetuiTagName(field)].value;     
          if ( (value != null) && 
                 (value != 'netui_null') ) 
             {
               formObj.submit(); 
             }   
           
         }
}


//-------------------------------------------------
// returns a reference to a document object
// using object detection instead of browser version
// if the object id cannot be found a null will be
// return
//
//-------------------------------------------------
function getDocumentObjectById(objectId) {

  // checkW3C DOM, then MSIE 4, then NN 4.
  if(document.getElementById && document.getElementById(objectId)) {
	return document.getElementById(objectId);
  }
  
  else if (document.all && document.all(objectId)) {  
	return document.all(objectId);
  } 
  
  else if (document.layers && document.layers[objectId]) { 
	return document.layers[objectId];
  } else {
	return null;
  }
  
}

//-------------------------------------------------
//  hides a div object
//-------------------------------------------------
function hideDiv(div)
{  
    if (div != null) 
    {
        div.style.display = 'none';
        div.style.visibility = 'hidden';     
         //alert('hideDiv ' + div.style.display );   
    }
  
} 

//-------------------------------------------------
//  shows a div object
//-------------------------------------------------
function showDiv(div)
{
    if (div != null) 
    {
        // inline doesn't work with older versions of netscape
        div.style.display = '';
        div.style.visibility = 'visible';
    }
     //alert('showDiv ' + div.style.display );   
}

// ------------
// show the given object
// ------------
    function showObject(id)
    {
        if (id != null)
        div = document.getElementById(id);
    
        if (div != null) 
        {
            div.style.visibility = 'visible';
            div.style.display = '';
        }
    }

// ------------
// Hide the given object
// ------------    
    function hideObject(id)
    {
        if ( id != null )
            div = document.getElementById(id);
    
        if (div != null) 
        {
            div.style.visibility = 'hidden';
            div.style.display = 'none';
        }
    }
    
// ------------
// Gets an object based on browser
// ------------
    function getObject(objectId)
    {
    
        if(document.getElementById && document.getElementById(objectId)) {
            return document.getElementById(objectId);
        }
        
        else if (document.all && document.all(objectId)) {  
            return document.all(objectId);
        } 
        
        else if (document.layers && document.layers[objectId]) { 
            return document.layers[objectId];
        } else {
            return null;
        }
    }