var s640;
function s640x480(url){
window.open(url,'s640','toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,width=640,height=520');
}
var s400;
function s400x500(url){
window.open(url,'s400','toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,width=500,height=390');
}
var s320;
function s320x240(url){
window.open(url,'s320','toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,width=320,height=286');
}