diff -ru dvdauthor-338/src/ifogen.c dvdauthor-338-MAR-patches/src/ifogen.c
--- dvdauthor-338/src/ifogen.c	Thu Jun  5 22:02:18 2003
+++ dvdauthor-338-MAR-patches/src/ifogen.c	Wed Aug 20 13:49:17 2003
@@ -113,6 +113,7 @@
 
 struct button {
     int x1,y1,x2,y2;
+    int up,down,left,right;
     struct commandset cs;
 };
 
@@ -779,10 +780,10 @@
                         buf[0xbb+j*18+3]=(b->y1>>4);
                         buf[0xbb+j*18+4]=(b->y1<<4)|(b->y2>>8);
                         buf[0xbb+j*18+5]=b->y2;
-                        buf[0xbb+j*18+6]=(j==0)?pg->numbuttons:j;
-                        buf[0xbb+j*18+7]=(j+1==pg->numbuttons)?1:j+2;
-                        buf[0xbb+j*18+8]=(j==0)?pg->numbuttons:j;
-                        buf[0xbb+j*18+9]=(j+1==pg->numbuttons)?1:j+2;
+			buf[0xbb+j*18+6]=(b->up)?b->up:((j==0)?pg->numbuttons:j); 
+			buf[0xbb+j*18+7]=(b->down)?b->down:((j+1==pg->numbuttons)?1:j+2);
+			buf[0xbb+j*18+8]=(b->left)?b->left:((j==0)?pg->numbuttons:j);
+			buf[0xbb+j*18+9]=(b->right)?b->right:((j+1==pg->numbuttons)?1:j+2);
                         buf[0xbb+j*18+10]=0x71; // g[0]=j && linktailpgc
                         buf[0xbb+j*18+11]=0x01;
                         buf[0xbb+j*18+15]=j;
@@ -2146,12 +2147,45 @@
 
     va->buttons=(struct button *)realloc(va->buttons,(va->numbuttons+1)*sizeof(struct button));
     bs=&va->buttons[va->numbuttons++];
+    
+    bs->left=0;
+    bs->right=0;
+    bs->up=0;
+    bs->down=0;
+    
     if( 4!=sscanf(b,"%dx%d-%dx%d,",&bs->x1,&bs->y1,&bs->x2,&bs->y2) ) {
         fprintf(stderr,"ERR:  Cannot parse button coordinates: %s\n",b);
         exit(1);
     }
     strsep(&b,",");
     parsecommandset(&bs->cs,b,ismenu);
+    while (strsep(&b,","),b) {
+      switch(b[0]) {
+      case 'l':
+      case 'L':
+	bs->left=strtoul(1+b,NULL,0);
+        fprintf(stderr,"Set left to %d\n",bs->left);
+	break;
+      case 'r':
+      case 'R':
+	bs->right=strtoul(1+b,NULL,0);
+        fprintf(stderr,"Set right to %d\n",bs->right);
+	break;
+      case 'u':
+      case 'U':
+	bs->up=strtoul(1+b,NULL,0);
+        fprintf(stderr,"Set up to %d\n",bs->up);
+	break;
+      case 'd':
+      case 'D':
+	bs->down=strtoul(1+b,NULL,0);
+        fprintf(stderr,"Set down to %d\n",bs->down);
+	break;
+      default:
+        fprintf(stderr,"ERR:  Parsing button [lrud] navigation: %s\n",b);
+        exit(1);
+      }
+    }  
 }
 
 void parseinstructions(struct chain *va,char *b,int ismenu)
@@ -2370,6 +2404,11 @@
             "\t\tfor VTS menus: root, ptt, audio, subtitle, angle\n"
             "\n\t" BLONG "-b X1xY1-X2xY2,DEST creates a button of the specified size.\n"
             "\t    See " ILONG "-i for a description of DEST.\n"
+	    "\t    (Optionally) \n"
+            "\t\t" BLONG "-b X1xY1-X2xY2,DEST,lL,rR,uU,dD specifies the\n"
+            "\t\t    button that should be selected when the user uses up, down,\n"
+	    "\t\t    left, and right controls.  No error checking is done.  \n"
+	    "\t\t    Button numbering starts at 1.\n"
             "\n\t" ILONG "-i post=DEST executes the DEST instructions at the\n"
             "\t    end of the title.  DEST is a plus separated list of the following:\n"
             "\t\tvtsm[X][.Y] - jump to titleset X, menu Y.  Note that currently\n"