var images = Array();
var i = 1;
while(i <= 16)
{
	images[i] = new Image();
	images[i].src = "./images/gallery/gallery"+i+".jpg";
	i++;
}

function swap_image(image_id, file)
{
	image = document.getElementById(image_id);
	if(image)
	{
		image.src = "./images/gallery/"+file;
	}
}