var

  form = document.getElementById("form"),

  input = document.getElementById("input"),

  button = document.getElementById("button"),

  helper = document.getElementById("helper");

​

function googleImages() {

  form.action="https://www.google.com/search?q=";

  input.name="q";

  helper.name="tbm";

  helper.value="isch";

}

function poly() {

  form.action="https://poly.google.com/search/";

  input.name="";

  helper.name="";

  helper.value="";

}

​

// this is bad solution :( works for Poly, but changes the default form behavior and makes it impossible to do new searches on Google Images

​

function removeURLQueryString() {

    $("#button").click(function(event) {

    window.open(form.action + encodeURIComponent(input.value));

    event.preventDefault();

    event.stopImmediatePropagation();

    });

}