var c = 1;

var image1 = new Image();
image1.src = "/gfx/promocja1.png";
var image2 = new Image();
image2.src = "/gfx/promocja2.png";


function disp_img(w) {
	if (c == 2) {
		c = 1;
		document.ani.src = "/gfx/promocja1.png";
	}
	else {
		document.ani.src = "/gfx/promocja2.png";
		c = 2;
	}
	
}

t = setInterval("disp_img(c)", 500);