var logo = document.createElement("div");
logo.innerHTML = '<div>' +

'<script type="text/javascript">function checkcat(cn) {' +
'alert("Значение: " + cn);}</script>' +

    '<form>' +
    '<input type=checkbox id=pl_ua name=ua value=9 onclick="checkcat(this.value, this.checked)"><label for=pl_ua>Страна</label>' +
    '</form>' +
    '</div>';
document.body.insertBefore(logo, document.body.firstChild);

function on_max_id_inp()
{
 alert('okk');
}
document.getElementById("headerNav").innerHTML = '';
document.getElementById("headerNav").innerHTML =
    document.getElementById("headerNav").innerHTML +
    'rrr <input type="text" id="max_id_inp" name="lastname">';
   
document.getElementById("headerNav").innerHTML =
    document.getElementById("headerNav").innerHTML +
    '<a href="on_max_id_inp()" onClick="on_max_id_inp()">max_id_inp_btn</a>';

var string_with_addr = location.search;