function popup( url, w, h )
{
var last, scrl=false;
if( last ) last.close();
sw = screen.availWidth;
sh = screen.availHeight;
if( w >= sw-30 ){ w = sw-30; scrl = true; h+=16 }
if( h >= sh-50 ){ h = sh-50; scrl = true; w+=16 }
var popup = "";
var l = ( sw / 2 ) - (w/2);
var t = ( sh / 2 ) - (h/2);
popup = window.open( '', '_blank', 'height='+h+',width='+w+',screenX=150,screenY=150,top='+t+',left='+l+',toolbar=no,directories=no,status=no,menubar=no,scrollbars=' + ( scrl ? 'yes' : 'no' ) + ',resizable=yes')
popup.document.write(
''+
''+
''+url+''+
''+
''+
''+
''+
''+
''+
' '+
' | '+
'
'+
'
'+
''+
''
);
last = popup;
popup.focus();
}