{
	imag = new Array()
	imag[0] = "images/sib_top_b1.gif";
	imag[1] = "images/sib_top_b1_2.gif";
	imag[2] = "images/sib_top_b4.gif";
	imag[3] = "images/sib_top_b4_2.gif";
	imag[4] = "images/sib_top_b3.gif";
	imag[5] = "images/sib_top_b3_2.gif";


	im = new Array()
		for (var i = 0; i < imag.length; i++){
			im[i] = new Image();
			im[i].src = imag[i];
		}
}

function change(num, imgname){
                imgname.src = im[num].src
}