Here are some great tips to allow you to use the upload cart with www.Weddingprints.com with either Safari or Firefox. Firefox requires an additional step, but I will get to that later.
The first thing you will need to do is go to your hard drive and click on the applications folder. Click on utilities, then java, then java preferences. This will open a window with two boxes. In both boxes, J2SE 1.4.2 will be on the bottom. You will need to drag it to the top of the box for both applet and application. Here is a screen shot of how it should look when you are done. Restart your computer, and you should be good to go. I have tested this with a 1200 image upload in both Safari and Firefox, and it works.
Now, for Firefox users, there is an extra step. 
Once you click upload, you will need to go to the progress box and hit the green plus. This will expand the box to the entire screen, and then reposition itself in the top left hand corner. At this point the text will be visible with status information.
This test was done with OSX 10.5.7 and the latest Safari and Firefox
Posted by S.A.Levine 