function closeWindow() {
  if (opener) window.close();
  else window.history.go(-1);
}

function openWindow (url,name,width,height,adds) {	
  if (!width) width=720;
  if (!height) height=500;
  someWindow=window.open(url,name,
                         "width="+width+",height="+height+","+
			 ((adds&&adds.indexOf("toolbar")!=-1)?null:"toolbar=no,")+
			 ((adds&&adds.indexOf("menubar")!=-1)?null:"menubar=no,")+
			 ((adds&&adds.indexOf("scrollbars")!=-1)?null:"scrollbars=yes,")+
			 ((adds&&adds.indexOf("status")!=-1)?null:"status=yes,")+
			 ((adds&&adds.indexOf("location")!=-1)?null:"location=no,")+
			 adds);
  someWindow.focus();
}