Gantt cleaner

gistfile1.js

var table = document.querySelector('#tasks'),
    table2 = table.cloneNode(true),
    forEach = Array.prototype.forEach;
forEach.call(document.body.querySelectorAll('body > div'),function(v,i){document.body.removeChild(v)});
document.body.appendChild(table2);    
forEach.call(document.querySelectorAll('th,td.q4 '),function(v,i){ v.style['background-color']='transparent' });
forEach.call(document.querySelectorAll('.p3'),function(p3,i){p3.parentNode.removeChild(p3)});