var buildings = [
	"224", "aspen", "international",
	"international2", "mob5", "wellsfargo"
];
var current  = 0;

function rfade(){
	var r;
	do{
		r = Math.floor(Math.random()*(buildings.length-1));
	}while(r==current);
	current = r;
	fade(buildings[r]);
}

function fade(to){
	$("#content_bg_under").css('background-image','url("images/buildings/'+to+'.png")');
	$('#content_bg').fadeOut('slow',function(){
		$('#content_bg').attr('src','images/buildings/'+to+'.png');
		$('#content_bg').show();
		setTimeout('rfade();',5000);
	});
}

$(document).ready(function(){
	setTimeout('rfade();',3000);
});