function popup(obj,w,h) {
	var width = 'width=';
	var height = ',height=';
	var scroll = ',scrollbars=yes'
	var resize = ',resizable=yes'
	window.open( obj.href, '_blank', width + w + height + h + scroll + resize );
}

function ChangeImage(imgid,newimg,imgid2,newimg2 ) {
   document.getElementById(imgid).src = newimg;
   document.getElementById(imgid2).src = newimg2;
}