Hide Blank Rows Which Spans Two Columns

Hide Multiple rows. I have text within two columns A, D. How can I Hide Blank rows which spans two column Named Ranges, "Range1" (A1:A15) "Range2" (D1:D15). As an example:

Beginning with this:

...A......D

1.Text
2........Text
3.
4.
5.
6.Text
7.Text
8.
9.
10.......Text
11.Text
12.
13.......Text
14.
15.......Text

To this , after hiding blanks:
...A......D

1.Text
2........Text
6.Text
7.Text
10.......Text
11.Text
13.......Text
15.......Text