Algorithm line numbering now 3 digits

numbertabbing.sty

@@ -15,12 +15,12 @@
 
 \newcounter{g@linecounter}
 \newbox\g@numbox%
-\newdimen\numboxsize          \numboxsize=1.5em%
+\newdimen\numboxsize          \numboxsize=2em%
 \newbox\g@seperator           \setbox\g@seperator=\hbox{:}
 
 \gdef\g@setnumbox{
       \refstepcounter{g@linecounter}%
-      \global\setbox\g@numbox=\hbox to\numboxsize{\hfil \theg@linecounter\copy\g@seperator\hfil }
+      \global\setbox\g@numbox=\hbox to\numboxsize{\hfil \theg@linecounter\copy\g@seperator\ }
 }
 
 % newlabel increments counter and set numbox. Empty labels are not passed to old label.