var popupWin = '';
function preview(imgStr, w, h)
{ var scroll='no';
var resize='no';
var screenW = (screen.availWidth-25);
var screenH = (screen.availHeight-50);
if((w > screenW)&&(h > screenH))
{ scroll='yes';
resize='yes';
w = screenW;
h = screenH;
} else
{ if(w > screenW)
{ scroll='yes';
resize='yes';
w = screenW;
h = h+20;
}
if(h > screenH)
{ scroll='yes';
resize='yes';
w = w+20;
h = screenH;
}
}
if((! popupWin.closed)&&(popupWin != '')) popupWin.close();
popupWin = window.open('', 'thumbWin', 'toolbar=no,scrollbars='+scroll+',resizable='+resize+',width='+w+',height='+h);
popupWin.document.write('
');
//popupWin.document.close();
popupWin.moveTo(86,146);
popupWin.focus();
}