function openRate(url, name) { 
 window.open(url, name, 'scrollbars=0,resizable=no,width=600,height=440,status=0,menubar=0');
}
function openComments(url, name) { 
 window.open(url, name, 'scrollbars=1,resizable=no,width=600,height=440,status=0,menubar=0');
}
function chVis(id) { 
 var e=document.getElementById(id);
 e.className = e.className=='vis' ? 'unvis' : 'vis';
}