function openPicture(img_name, img_alt, img_descr, w, h){
if (w > screen.Width - 50){ w = screen.Width - 50; } else { w = w; }
if (h > screen.Height - 85 ){ h = screen.Height - 85;} else { h = h; }
if(self.pzoom != null && !self.pzoom.closed)
self.pzoom.close();
pzoom = window.open("","pzoom","scrollbars=1,left=10,top=10,width=" + w + ",height=" + h);
image = new Image();
path = img_name;
image.src = path;
ntag = '\n';
ntag += '\n';
ntag += ' Picture Zoom\n';
ntag += ' \n';
ntag += '\n';
ntag += '\n';
ntag += '\n';
ntag += ' \n';
ntag += '  | \n';
ntag += '
\n';
ntag += '
\n';
ntag += '\n';
ntag += '';
pzoom.document.write(ntag);
}