How to disaply waiting progress bar on Strongly typed MVC 4 post method.

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HTML5

MVC4

Iam having strongly typed view one post method.
@using.beginform("Save","TestController")
{
.................
.................
<button type=submit>Save</button>
}

Public class TestController
{
[httppost]
public save(model testmodel)
{
calling wcf service to save the model data

retern view("Index");
}
}

In the above scenario some time it is taking time to save the data through the wcf service in this case i want to dispaly the waiting progress bar till the save action completes.

I have tried in some ways where i dont have strongly typed model and am calling the action method through ajax call there i could able to achieve this progress bar.

But how can we display the waiting progress bar on form submit method.

Is there any way to maintain a unique waiting progress bar window in application level that we can enable automatically whenever the application take some time.