Checkbox click in webpage?

Default code

    <p>

    <label class="has-checkbox terms">

    <input type="hidden" value="0" name="order[terms]"></input>
    <div class="icheckbox_minimal" style="position: relative;">
        <input id="order_terms" class="checkbox" type="checkbox" value="1" name="order[terms]" style="position: absolute; top: -20%; left: -20%; display: block; w…roll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></input>

<ins class="iCheck-helper" style="position: absolute; top: -20%; left: -20%; display: block; w…roll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins>

</div>

I have read and agree to the 

<a href=""></a>

        , and accept the return policy

    </label>

</p>

Checked code

<div class="icheckbox_minimal checked" style="position: relative;">

    <input id="order_terms" class="checkbox" type="checkbox" value="1" name="order[terms]" style="position: absolute; top: -20%; left: -20%; display: block; w…roll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></input>

<ins class="iCheck-helper" style="position: absolute; top: -20%; left: -20%; display: block; w…roll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins>

</div>

Test code

test = webBrowser1.Document.GetElementById("order_terms");
test.invokemember("click");

The above code did not click/check the checkbox!

Here is code that checks for the check/click of the checkbox...

function(e) {
  var t = e[c],
    n = e.keyCode;
  if (t == h) return !1;
  if (t == "keydown" && n == 32) {
    if (a[c] != i || !a[s]) a[s] ? S(o, s) : E(o, s);
    return !1
  }
  t == "keyup" && a[c] == i ? !a[s] && E(o, s) : /us|ur/.test(t) && B[t == "blur" ? v : d](A)
}

Thanks.

I am pretty sure I need to work around the iCheck-helper..