/* TODO: move this function server-side */
function cities(num_to_show) {

	var cities = new Array( 'Potomac', 'Bethesda', 'Chevy Chase', 'Kensington', 'Poolesville',
							'Germantown', 'Silver Spring', 'Gaithersburg', 'Barnesville', 'Rockville',
							'Olney', 'Frederick', 'Laytonsville', 'Derwood', 'Takoma Park', 'Darnestown',
							'Boyds', 'Beallsville' );
	var num_cities = cities.length;
	var chosen = new Array(num_cities);
							
	for( var i = 0; i < num_to_show; ) {
		rnd = Math.floor(Math.random() * num_cities);
			if( chosen[rnd] != 1 ) {
				document.write(cities[rnd] + '<br/>');
				chosen[rnd] = 1;
				i++;
			}	
	}	
}


function off(imgName) {
  if (document.images)
    document.images[imgName].src = eval(imgName + "_off.src");
}

function on(imgName) {
  if (document.images) 
    document.images[imgName].src = eval(imgName + "_on.src");
}


if (document.images) {
	 var about_off = new Image();
   about_off.src = "img/about.gif";
	 var about_on = new Image();
   about_on.src = "img/about_on.gif";
	 
 	 var news_off = new Image();
   news_off.src = "img/news.gif";
	 var news_on = new Image();
   news_on.src = "img/news_on.gif";
	 
 	 var portfolio_off = new Image();
   portfolio_off.src = "img/portfolio.gif";
	 var portfolio_on = new Image();
   portfolio_on.src = "img/portfolio_on.gif";
	 
 	 var contact_off = new Image();
   contact_off.src = "img/contact.gif";
	 var contact_on = new Image();
   contact_on.src = "img/contact_on.gif";
}