function swap(which){
	var when = this.which;
	
	switch(which){
		case 1:
		document.getElementById('PictureBox1').src="bbuttons/prev.jpg";
		break
		case 2:
		document.getElementById('PictureBox2').src="bbuttons/next.jpg";
		break
		case 3:
		document.getElementById('PictureBox3').src="bbuttons/gal.jpg";
		break
		case 4:
		document.getElementById('PictureBox4').src="bbuttons/aut.jpg";
		case 5:
		document.getElementById('PictureBox5').src="ssr.jpg";
		break
		default:
	}
}

function swapback(which){
	var what = this.which;
	
	switch(which){
		case 1:
		document.getElementById('PictureBox1').src="abuttons/prev.jpg";
		break
		case 2:
		document.getElementById('PictureBox2').src="abuttons/next.jpg";
		break
		case 3:
		document.getElementById('PictureBox3').src="abuttons/gal.jpg";
		break
		case 4:
		document.getElementById('PictureBox4').src="abuttons/aut.jpg";
		case 5:
		document.getElementById('PictureBox5').src="ss.gif";
		
		break
		default:
	}
}