Get current report parameters

TESTME

Hello,

I am trying to create an HTML button that refreshes a report page. My code has been:

this.onclick = function(event)
{
var viewer = this.getViewer();
viewer.submit();
}

However, that seems to revert the report to its default parameters, and not the report parameters chosen by the user. I see that the viewer has a setParameters function, but I don't know how to get the parameters from the report. My pseudo-code would be:

this.onclick = function(event)
{
var viewer = this.getViewer();
var params = get current report parameters;
viewer.setParameters(params);
viewer.submit();
}

I just don't know how to get the current report parameters to make this work.

Thanks!