var k = 1;
var p = 0;
var n = 0;
var obj = '#logo';
var int;

function anim()
{
    n = $('div.ai').size();
	p = k==1?n:(k-1);
	$(obj+p).css('z-index', 0);
   	$(obj+k).css('z-index', 10);
	$(obj+k).css('display', 'none');
	$(obj+k).fadeIn(1000, function() {
		k = k==n?1:(k+1);
        $(obj+p).css('display', 'none');
	});

}

$(document).ready(function()
{
	$('#nav').droppy();

    var imgs = new Array('1','2','3','4');
	$.preload(imgs, {
			base:'/images/topimg',
			ext:'.jpg',
			onFinish:function() {
				anim();
                setInterval('anim()', 5000);
			}
	});
});