function showElements(aElementIDs)
{
	if(!aElementIDs) return;
	
	for(var i = 0; i < aElementIDs.length; i++)
	{
		changeObjectVisibility(aElementIDs[i], "visible")
		changeObjectDisplay(aElementIDs[i], "block")
	}
}


function hideElements(aElementIDs)
{
	if(!aElementIDs) return;
	
	for(var i = 0; i < aElementIDs.length; i++)
	{
		changeObjectVisibility(aElementIDs[i], "hidden")
		changeObjectDisplay(aElementIDs[i], "none")
	}
}


/*
getStyleObject - Get the style object for a given element, required for cross-browser compatability
*/
function getStyleObject(objectId) {
  // checkW3C DOM, then MSIE 4, then NN 4.
  //
 
  if(document.getElementById && document.getElementById(objectId)) {
	return document.getElementById(objectId).style;
   }
   else if (document.all && document.all(objectId)) {  
	return document.all(objectId).style;
   } 
   else if (document.layers && document.layers[objectId]) { 
	return document.layers[objectId];
   } else {
	return false;
   }
}


/*
getObject - Get the object for a given element, required for cross-browser compatability
*/

function getObject(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 false;
   }
}

function changeObjectVisibility(objectId, newVisibility) {
    // first get the object's stylesheet
    var styleObject = getStyleObject(objectId);

    // then if we find a stylesheet, set its visibility
    // as requested
    //
    if (styleObject) {
		styleObject.visibility = newVisibility;
		return true;
    } else {
		return false;
    }

}

function changeObjectDisplay(objectId, newDisplay) {
    // first get the object's stylesheet
    var styleObject = getStyleObject(objectId);

    if (styleObject) {
	styleObject.display = newDisplay;
	return true;
    } else {
	return false;
    }

}