var passThroughFormSubmit = false;
function CheckAsirra()
{
    if (passThroughFormSubmit)
	return true;

    Asirra_CheckIfHuman(HumanCheckComplete);
    return false;
}

function HumanCheckComplete(isHuman)
{
    if (!isHuman)
	alert("Please correctly identify the cats.");
    else
    {
	passThroughFormSubmit = true;
	formElt = document.getElementById('mainForm');
	formElt.submit();
    }
}