Your different table column widths are inconsistent.
Where the spacer images appear your total widths are 245, 5, 375, 8 and 117 = 750, but then there are 5 x 5px width added to give a total of 775px.
The 3 pictures that show up have the following widths 245, 250 and 245px but in your code you have allocated 245, 5, 350, 8 and 250px = 858px the 5 and 8 widths being the space between the images.