Have You got any examples or links to free JQuery flow diagram or network/ graph diagram ?
Wirekit looks good for creating custom wired flows:
http://neyric.github.com/wireit/
Although JSPlumb doesn't have something for explicitly creating flow charts, I'm sure you can get this to work for your purposes.
Ali Abdalla
jGraphUI is very close to what you need and it's free.
Maybe with some tweaks u could use jqPlot
来源：https://stackoverflow.com/questions/3700332/network-diagram-flow-diagram-in-jquery