In the content editor, just paste the following and it works:
<script> function HideWebPartZone() { var x = document.getElementsByTagName("TD") var i=0; for (i=0;i<x.length;i++) { if (x[i].width=="70%") { // left column x[i].style.width="100%"; // center (otherwise empty) column var x2=x[i].nextSibling; x2.style.width="0"; x2.style.display="none"; x2.innerHTML=""; // right column x2=x[i].nextSibling.nextSibling; x2.style.width="0"; x2.style.display="none"; x2.innerHTML=""; // right margin column x2=x[i].nextSibling.nextSibling.nextSibling; x2.style.width="0"; x2.style.display="none"; x2.innerHTML=""; //all done return; } } } _spBodyOnLoadFunctionNames.push("HideWebPartZone") </script>
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