//
// global variables
//
var currentid;

var home_on, home_off;
home_on = new Image();
home_on.src = 'images/nav/home_on.gif';
home_off = new Image();
home_off.src = 'images/nav/home_off.gif';

var excerpts_on, excerpts_off;
excerpts_on = new Image();
excerpts_on.src = 'images/nav/excerpts_on.gif';
excerpts_off = new Image();
excerpts_off.src = 'images/nav/excerpts_off.gif';

var discuss_on, discuss_off;
discuss_on = new Image();
discuss_on.src = 'images/nav/discuss_on.gif';
discuss_off = new Image();
discuss_off.src = 'images/nav/discuss_off.gif';

var reviews_on, reviews_off;
reviews_on = new Image();
reviews_on.src = 'images/nav/reviews_on.gif';
reviews_off = new Image();
reviews_off.src = 'images/nav/reviews_off.gif';

var about_on, about_off;
about_on = new Image();
about_on.src = 'images/nav/about_on.gif';
about_off = new Image();
about_off.src = 'images/nav/about_off.gif';

var contact_on, contact_off;
contact_on = new Image();
contact_on.src = 'images/nav/contact_on.gif';
contact_off = new Image();
contact_off.src = 'images/nav/contact_off.gif';


//
// roll over
//
function rollover( id )
{
	var letter = id.charAt(0);
	var number = id.charAt(1);	

	var temp = eval(id + '_on').src
	document.getElementById(id).src = temp;
}

//
// roll out
//
function rollout( id )
{
	var letter = id.charAt(0);
	var number = id.charAt(1);

	var temp = eval(id + '_off').src
	document.getElementById(id).src = temp;
}

//
// load nav
//
function loadnav()
{
	if (currentid == '')
		return;	

	var temp1 = eval(currentid + '_on').src
	document.getElementById(currentid).src = temp1;

	var temp2 = eval(currentid + '_off');
	temp2.src = 'images/nav/' + currentid + '_on.gif';
}