CreativeTechGuyGames Reddit Sidebar Collapse

var serachForm = document.getElementById("search");
serachForm.getElementsByTagName("input")[0].style.width = "260px";
var sidebar = document.getElementsByClassName("side")[0];
sidebar.style.overflow = "hidden";
var button = document.createElement("button");
button.style.marginRight = "5px";
button.innerHTML = "»»";
button.setAttribute("collapse-state", "open");
serachForm.insertBefore(button, document.getElementById("search").children[0]);
button.onclick = function(){
    if (button.getAttribute("collapse-state") == "open"){
        button.innerHTML = "««";
        button.setAttribute("collapse-state", "closed");
        sidebar.style.width = "35px";
    }else{
        button.innerHTML = "»»";
        button.setAttribute("collapse-state", "open");
        sidebar.style.width = "300px";
    }
    return false;
};