var muElement = document.getElementById('d_fon');
var msElement = document.getElementById('d_stx');
var myElement = document.getElementById('d_con');

var muForm = document.getElementById('form_d_fon');
var msForm = document.getElementById('form_d_stx');
var myForm = document.getElementById('form_d_con');

var muList = document.getElementById('list_d_fon');
var msList = document.getElementById('list_d_stx');
var myList = document.getElementById('list_d_con');
var provList = document.getElementById('if_one');

var musElement = document.getElementById('sl_fon');
var mssElement = document.getElementById('sl_stx');
var mysElement = document.getElementById('sl_con');

function showSloy(){ muElement.className = 'y_div', msElement.className = 's_div', myElement.className = 'x_div'; }
function hideSloy(){ muElement.className = 'h_div', msElement.className = 'h_div', myElement.className = 'h_div'; }

function showList(){ muList.className = 'form_y_div', msList.className = 'form_s_div', myList.className = 'form_list_div'; }
function hideList(){ muList.className = 'h_div', msList.className = 'h_div', myList.className = 'h_div'; }

function showForm(){ muForm.className = 'form_y_div', msForm.className = 'form_s_div', myForm.className = 'form_x_div'; }
function hideForm(){ muForm.className = 'h_div', msForm.className = 'h_div', myForm.className = 'h_div'; }

function infoSloy(){ musElement.className = 'h_div', mssElement.className = 'h_div', mysElement.className = 'h_div'; }

function clearFI(Id){ document.getElementById(Id).innerHTML = document.getElementById(Id).innerHTML; }

function hovBack(Id,Clas){ document.getElementById(Id).className = Clas; }