Imagine a 10 x 10 grid, each cell has a value, say they are numbered from 1 to 100 in this grid. I want the grid to highlight all integer multiples of the number in a given user-selected cell. So if I pick the cell with the number 2, all even numbered cells will be highlighted in pink while the cell I selected is highlighted in red; pick 7 and all multiples of 7 are highlighted in pink and the cell containing the value 7 is red. now, let's say that my cells no longer have numbers but identifiers, say students in a class. when i pick a student i want all his/her friends' cells to light up plus that student's stats to be displayed. Any idea where I can start?