--- xpdf-3.02/xpdf/XPDFViewer.cc~	2009-02-02 01:58:55.000000000 -0700
+++ xpdf-3.02/xpdf/XPDFViewer.cc	2009-02-02 02:27:04.000000000 -0700
@@ -592,13 +592,13 @@ void XPDFViewer::mouseCbk(void *data, XE
   int i;
 
   if (event->type == ButtonPress) {
-    if (event->xbutton.button >= 1 && event->xbutton.button <= 7) {
+    if (event->xbutton.button >= 1 && event->xbutton.button <= 9) {
       keyCode = xpdfKeyCodeMousePress1 + event->xbutton.button - 1;
     } else {
       return;
     }
   } else if (event->type == ButtonRelease) {
-    if (event->xbutton.button >= 1 && event->xbutton.button <= 7) {
+    if (event->xbutton.button >= 1 && event->xbutton.button <= 9) {
       keyCode = xpdfKeyCodeMouseRelease1 + event->xbutton.button - 1;
     } else {
       return;