function process1(){
   document.getElementById("form1").style.display = "block";
   document.getElementById("form2").style.display = "none";
   document.getElementById("kiev").className = "city_active";
   document.getElementById("lvov").className = "city";
}
 
function process2(){
   document.getElementById("form1").style.display = "none";
   document.getElementById("form2").style.display = "block";
   document.getElementById("kiev").className = "city";
   document.getElementById("lvov").className = "city_active";
}