diff -r 72e52c5333ef dwm.c
--- a/dwm.c	Wed Nov 25 13:56:17 2009 +0000
+++ b/dwm.c	Thu Feb 25 23:41:45 2010 +0100
@@ -177,6 +177,7 @@
 static void enternotify(XEvent *e);
 static void expose(XEvent *e);
 static void focus(Client *c);
+static void focusatomchange(void);
 static void focusin(XEvent *e);
 static void focusmon(const Arg *arg);
 static void focusstack(const Arg *arg);
@@ -262,6 +263,7 @@
 	[UnmapNotify] = unmapnotify
 };
 static Atom wmatom[WMLast], netatom[NetLast];
+static Atom focusatom;
 static Bool otherwm;
 static Bool running = True;
 static Cursor cursor[CurLast];
@@ -834,6 +836,33 @@
 }
 
 void
+focusatomchange() {
+	int format, status;
+	unsigned long n, extra;
+	unsigned char *p = NULL;
+	Atom real;
+	Client *c;
+	Monitor *m;
+	Window *w;
+
+	status = XGetWindowProperty(dpy, root, focusatom, 0L, 32L, True, XA_CARDINAL, &real, &format, &n, &extra, &p);
+	if(status!=Success || n==0) return;
+	if((w = (Window*)p) && (m = wintomon(*w)) && m != selmon) {
+		unfocus(selmon->sel);
+		selmon = m;
+	}
+	if((c = wintoclient(*w))) {
+		if (!ISVISIBLE(c)) {
+			c->mon->seltags ^= 1; /* toggle sel tagset */
+			c->mon->tagset[c->mon->seltags] = c->tags & TAGMASK;
+		}
+		focus(c);
+		arrange(c->mon);
+	}
+	XFree(p);
+}
+
+void
 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
 	XFocusChangeEvent *ev = &e->xfocus;
 
@@ -1264,6 +1293,8 @@
 
 	if((ev->window == root) && (ev->atom == XA_WM_NAME))
 		updatestatus();
+	else if((ev->window == root) && (ev->atom == focusatom))
+		focusatomchange();
 	else if(ev->state == PropertyDelete)
 		return; /* ignore */
 	else if((c = wintoclient(ev->window))) {
@@ -1493,6 +1524,7 @@
 	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
 	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+	focusatom = XInternAtom(dpy, "_DWM_FOCUS", False);
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);