var c1 = 1;

/* Preloading images */
var Buton1 = new Image();
Buton1.src = "images/Buton1.jpg";
var Buton2 = new Image();
Buton2.src = "images/Buton2.jpg";



function disp_img1(w) {
	if (c1 == 3) {
	c1 = 1;
	}
	var img_src1 = "images/Buton" + c1 + ".jpg";
	document.getElementById('Buton').src = img_src1;
	c1++;
}


t = setInterval("disp_img1(c1)", 1000);