Shadowrun 4E Combat Automator, Has anyone done this? Options

[LurkerOutThere]

Before I put my lackluster programing skills and sorely limited time resources to the test has anyone done this? A simple website or excell spreadhseet that players preload their attributes, statistics, and bonsuses into. WHen combat comes it rolls initiative (I know there is an initiative webform already it is excellent) and then whenever the players need to roll the program itself pops up a window allowing the GM to select from the appropriate combat skills and then use a slider to select any appropriate situational modifiers. It will prompt (likely with a checkbox before the dice are even rolled) whether the defender wants to actively dodge and with what skill. There will be an additional slider for situational modifiers there. Additionally there will be checkboxes for either side to spend edge before the roll. On the results window there will be an option to spend edge after the roll to reroll failures or add edge.

Ultimately what i'm looking for is something I can bring to cons (preferably on my Ipad) I can bring to cons as a GM to speed up combat and save the associated time involved in dice rolls and then counting. Does anyone have something like this already?