var active_id = '';
function swap($id, $image, $direction)
{
	if($direction == 'active') active_id = $id;
	if(($id != active_id) || $direction == 'active') document.getElementById($id).src = $image;
}
function start_(page)
{
	switch(page)
	{
		case 'home':
			swap('Image1', 'images/nav_blue_home.gif', 'active');
		break;
		case 'news':
			swap('Image2', 'images/nav_blue_news.gif', 'active');
		break;
		case 'benefits':
			swap('Image4', 'images/nav_blue_benefits.gif', 'active');
		break;
		case 'about':
			swap('Image3', 'images/nav_blue_about.gif', 'active');
		break;
		case 'contact':
			swap('Image5', 'images/nav_blue_contact.gif', 'active');
		break;
	}
}
function navigate_($item)
{
	parent.window.scroll(0,0);
	window.location = $item;
}
start_(page);