function popen(u, n, w, h, l, t, scroll){
if(l=="centre") var l=(screen.width-w)/2;
if(t=="centre") var t=(screen.height-h)/2;
var _pop=window.open(u,n,'width='+w+',height='+h+',top='+t+',left='+l+',location=no,menubar=no,resizable=0,scrollbars='+scroll+',status=no,toolbar=no,fullscreen=no');
_pop.focus();
return false;
}
function pclose(){
self.close();
return false;
}