im looking for a vga splitter or cross over that will display two outputs from two devices but that you can cross over to work on oposit screens

for example i have an xbox 360 and pc both through vga but i want to be able to play the xbox on the projector and pc on the monitor or pc on the projector and xbox on the monitor . and ive looked every wear and still cant find what im looking for basicly two vga in puts two vga out puts that can run in parelell 1in to 3 out 2in to 4 out or by switchig it over run 1in to 4 out and 2in to 3out

_________
vga pc 1 in [ ] 3 out computer monitor
[ ]
[ ]
vga xbox 360 2 in [_________] 4 out projector

http://www.monoprice.com/products/subdepartment.asp?c_id=101&cp_id=10104

http://www.monoprice.com/products/subdepartment.asp?c_id=101&cp_id=10106