I created a diagonal stripe image in Photoshop, just dragging the lines an "equal" distance from each other for a blueprint website design. I knew it would be much more complicated to recreate this diagonal texture in a seamless manner:

enter image description here

Perhaps there are tools to do this easily in Illustrator, but I'm limited to PS CS5.

How can I achieve a seamless stripe texture at the angle shown here in Photoshop?