Scrolling for plan9port sam

could someone help clean this crappy patch up a bit? i'm drunk and sam
not being able to understand my scrollwheel is really pissing me off.
at least this works despite it being ugly and steeped in cheap
whiskey...

--jorden

diff -r 5f1b36ecd9db src/cmd/samterm/main.c
--- a/src/cmd/samterm/main.c	Tue Jun 09 09:26:13 2009 -0700
+++ b/src/cmd/samterm/main.c	Wed Jul 01 00:29:48 2009 -0400
 <at>  <at>  -142,6 +142,10  <at>  <at> 
 					scroll(which, 3);
 				else
 					menu3hit();
+			} else if((mousep->buttons&8)) {
+				scroll(nwhich, 1);
+			} else if((mousep->buttons&16)) {
+				scroll(nwhich, 3);
 			}
 			mouseunblock();
 		}
diff -r 5f1b36ecd9db src/cmd/samterm/scroll.c
--- a/src/cmd/samterm/scroll.c	Tue Jun 09 09:26:13 2009 -0700
+++ b/src/cmd/samterm/scroll.c	Wed Jul 01 00:29:48 2009 -0400
 <at>  <at>  -100,7 +100,7  <at>  <at> 
 void
 scroll(Flayer *l, int but)
 {
-	int in = 0, oin;
+	int in = 0, oin, scw = 0;
 	long tot = scrtotal(l);
 	Rectangle scr, r, s, rt;
 	int x, y, my, oy, h;
 <at>  <at>  -116,9 +116,10  <at>  <at> 
 	do{
 		oin = in;
 		in = abs(x-mousep-≥xy.x)<=FLSCROLLWID/2;
+		scw = ((mousep->buttons&8) | (mousep->buttons&16));
 		if(oin && !in)
 			scrunmark(l, r);
-		if(in){
+		if(in || scw){
 			scrmark(l, r);
 			oy = y;
 			my = mousep->xy.y;