dist/jquery.floatThead.js
function getOffsetWidth(el) {
    var rect = el.getBoundingClientRect();
    return rect.width || rect.right - rect.left;
  }
function getOffsetWidth(el) {
    var rect = el.getBoundingClientRect();
    return rect.width || rect.right - rect.left;
  }
function getOffsetWidth ( el ) { var rect = el . getBoundingClientRect ( ) ; return rect . width || rect . right - rect . left ; }
returns fractional pixel widths
returns fractional pixel widths