// ---------------- Pop up an image, centered, and around 680 pixels wide
function popupImage( image ){
// Positions
w=640;
h=480;
sw=(screen.width / 2);
sh=(screen.height / 2);
x = sw - (w / 2);
y = sh - (h / 2);
// Display
toolbar_str = 'no';
menubar_str = 'no';
statusbar_str = 'no';
scrollbar_str = 'no';
resizable_str = 'no';
var popwindow = window.open( '', 'popupimage', 'left='+x+',top='+y+',width='+w+',height='+h+
',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+
',scrollbars='+scrollbar_str+',resizable='+resizable_str);
popwindow.document.write( '\nClick on the image to close\n');
popwindow.document.write( '\n');
popwindow.document.write( '\n');
popwindow.document.write( '![](\"')
\n');
popwindow.document.write( '\n');
}