harvestdata | Retrieves data from Harvest and prepares it for Geckoboard

I'm attaching an eventlistener to a button on a page. When clicked, it runs a function.

harvestDataBtn.addEventListener("click", harvestData, false);

The function optionally takes a value.

function harvestData(idsToHarvest)

I don't want the clicking of the button to pass anything into the function. The optional variable idsToHarvest is used in other instances of the function being called, separate from the click.

However, when I click the button, idsToHarvest is a mouseevent. Making this code below inside my function not work as intended.