imgNumbersky = -1;
sky_list.sort(function() {return 0.5 - Math.random();});

function swapsky()
{ 
	imgNumbersky++;
	//imgNumbersky = Math.floor(Math.random()*sky_list.length);
	
	if (imgNumbersky > sky_list.length - 1)
	{
		sky_list.sort(function() {return 0.5 - Math.random();});
		imgNumbersky = 0
	}
	if (sky_list.length != 0)
	{
		document.getElementById("skyscraper").innerHTML = sky_list[imgNumbersky];
	}
	setTimeout('swapsky()',12000);
}