//Xpath to get sidebar element of neopets
var SideBar = document.evaluate("id('content')/table/tbody/tr/td[1]",document,null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
//a var to create a div for clarity of code later
var mydiv = document.createElement('div');
var start = document.createElement('button');
var stop = document.createElement('button');
//Putting it all together
SideBar.snapshotItem(0).appendChild(mydiv);
mydiv.innerHTML = '<font size="2" face="Verdana" color="red">Buy List</font><br></br><textarea ID="blist" cols="15"rows="5"></textarea><br></br>';
//a startbutton
var startButton = mydiv.appendChild(start);
    startButton.innerHTML = '<button>Start</button>';
    startButton.addEventListener('click', start, false);
//a stopbutton
var stopButton = mydiv.appendChild(stop);
    stopButton.innerHTML = '<button>Stop</button>';
    stopButton.addEventListener('click', stop, false);