-CWD="`pwd`"
-if echo "$PATH" | grep -vq "\(^\|:\)$CWD\(:\|$\)"; then
- PATH="$CWD:$PATH"
+START_DIR="`pwd`"
+cd "`dirname \"$0\"`"
+PROG_DIR="`pwd`"
+cd "$START_DIR"
+if echo "$PATH" | grep -qv "\(^\|:\)$PROG_DIR\(:\|$\)"; then
+ PATH="$PROG_DIR:$PATH"
fi
+START_DIR=''
+PROG_DIR=''
+unset START_DIR PROG_DIR