please wait popup on submit

Hi,

i have a opencart instance running that i modify to be able to upload multiple pictures as a product, everything is running ok but the problem is when a client has >500mb of pics to upload it's take time and the client dose not wait but instead he pushes the submit button over and over again, and i get multiple orders from the same person.

i wood like to implase a jquery popup with please wait....processing on every submit of the client until the process is done.

can you please tell me how is the easiest way to implement this.

http://akquinet.github.io/jquery-waitin ... /demo.html this is what i was thinking of.


Thanks.

Br,
Vukomir