// Change an image
function change_img(which,id) {
	value = which.options[which.selectedIndex].value;
	image = 'image'+id;
	if (value != '' && value != 'cat')
		document.images[image].src = '/images/phones/'+value+'/main.gif';
	else
		document.images[image].src = '/images/phones/nomain.jpg';
}