var omitformtags = ["body"]//["input", "textarea", "select"]
omitformtags = omitformtags.join("|")
function disableselect(e) {
    if (omitformtags.indexOf(e.target.tagName.toLowerCase()) == -1)
        return false
}
function reEnable() {
    return true
}
if (typeof document.onselectstart != "undefined")
    document.onselectstart = new Function("return false")
else {
    document.onmousedown = disableselect
    document.onmouseup = reEnable
}

//禁用右键
function stop() {
    return false;
}
document.oncontextmenu = stop;