When setting up your customized menus, have you ever run into the issue as to what values to use for the X/Y placement of the text? Needless to say, I have. So, I created some grids on 100 pixel spacing. One with white lines and one with black lines. Both include text to indicate the X/Y location and both are on transparent backgrounds. The
ZIP file contains both AI (Adobe Illustrator) and PNG versions of both grids. The AI version can be loaded by Adobe Illustrator or PhotoShop. Or you can use your favorite image editor that supports layers. You can easily make your menu background image and overlay it with one of the grids. You can then save the necessary JPG file. You can then burn a test disc on BD-RE media. Once you have the layout you want, you can save a new JPG file without the grid.
Enjoy.