// cetered pop-up script
function thePopper(url,ht,wd) {
var winl = (screen.width - wd)/2;
var wint = (screen.height - ht)/2;
exampleWin = window.open( url, "exwin", "status=0,toolbars=0,scrollbars=1,resizable=1,menubar=1,width="+wd+",height="+ht+",left="+winl+",top="+wint+"");
if(parseInt(navigator.appVersion) >= 4){exampleWin.window.focus();}
}