function setFieldAndDisable(field_id, value)
{
    var field = document.getElementById(field_id);
    field.value = value;
    field.disabled = true;
    return true;
}

function setUniqname()
{
	var wshshell = new ActiveXObject("wscript.shell");
    var username = wshshell.ExpandEnvironmentStrings("%username%");
	setFieldAndDisable("uniqname",username);
	return true;
}