function showFeature(targetID)
{
	var linkNode;
  var node;

  var classIDs = getElementsByClass(document.getElementById('navContent'), 'navContentBox', 'div');

  for (i = 0; i < classIDs.length; i++) 
  {
    if (classIDs[i])
    {
    	linkNode = document.getElementById(classIDs[i] + "Link");
      linkNode.style.border = '1px solid #F2F2F2';    	
    	node = document.getElementById(classIDs[i]);
    	node.style.display = 'none';
    }
  }
  
  linkNode = document.getElementById(targetID + "Link");
  linkNode.style.border = '1px solid #0146E2';  
  node = document.getElementById(targetID);
  node.style.display = 'block';
}

function getElementsByClass(node,searchClass,tag) 
{
  var classElements = new Array();
  var els = node.getElementsByTagName(tag);
  var elsLen = els.length;
  var pattern = new RegExp("(^|\\s)" + searchClass + "(\\s|$)");
  for (i = 0, j = 0; i < elsLen; i++) 
  {
    if ( pattern.test(els[i].className) ) 
    {
      classElements[j] = els[i].id;
      j++;
    }
  }
  return classElements;
}