Get or set an attribute for a DOM element

gistfile1.js

function attr(e, n, v) {
    var fixAttr = {
        tabindex: 'tabIndex',
        readonly: 'readOnly',
        'for': 'htmlFor',
        'class': 'className',
        maxlength: 'maxLength',
        cellspacing: 'cellSpacing',
        cellpadding: 'cellPadding',
        rowspan: 'rowSpan',
        colspan: 'colSpan',
        usemap: 'useMap',
        frameborder: 'frameBorder',
        contenteditable: 'contentEditable'
    };
    var d = document.createElement("div");
    d.setAttribute("class", "yuanJS");
    var fullSupported = d.className === "yuanJS";
    if(e && n && v) {
        e.setAttribute(fullSupported ? n : (fixAttr[n] || n), v);
    } else if (e && n) {
        return e.getAttribute(fullSupported ? n : (fixAttr[n] || n));
    }
}