function display(elem) {
                if (document.getElementById(elem).style.display != "") { 
                    document.getElementById(elem).style.display = "";
                    //event.srcElement.innerText = "Скрыть";
                }
                else {
                    document.getElementById(elem).style.display = "none";
                }
                return false;
            }
window.onload = function() {
           document.getElementById("msk").style.display = "none";
           document.getElementById("spb").style.display = "none";
           document.getElementById("belgorod").style.display = "none";
           document.getElementById("zhelez").style.display = "none";
           document.getElementById("yoshkar").style.display = "none";
           document.getElementById("kazan").style.display = "none";
           document.getElementById("kam").style.display = "none";
           document.getElementById("kemerovo").style.display = "none";
           document.getElementById("tumen").style.display = "none";
           document.getElementById("samara").style.display = "none";
}