function image( file, title, w, h ) {
width = w + 50;
height = h + 50;
if( height > screen.availHeight ) height = screen.availHeight - 100;
if( width > screen.availWidth ) width = screen.availWidth - 100;
var left = ( screen.availWidth / 2 ) - ( width / 2 );
var top = ( screen.availHeight / 2 ) - ( height / 2 );
var wnd = window.open( "", "image", "left="+left+",top="+top+",screenX="+left+",screenY="+top+",toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width="+width+", height="+height );
wnd.document.write( '' + title + '' );
wnd.focus();
return false;
}