function previewImg( img, x, y )
{
var popupWnd = window.open('', 'newImgWin', 'toolbar=no, scrollbars=no, width='+ x +', height='+ y +'');
popupWnd.document.open();
popupWnd.document.write(''+ img +'');
popupWnd.document.write('');
popupWnd.document.write('');
popupWnd.document.write('
');
popupWnd.document.write('');
popupWnd.document.close();
popupWnd.focus();
}