window.onload = function(){
        removeOdds(document.documentElement);

  var Menu_1 = document.getElementById('Menu_1');
  for(var n = Menu_1.firstChild; n; n = n.nextSibling) {
    n.lastChild.style.display = 'none';
    n.onmouseover = function() {
      if(this.lastChild.style.display == 'none') {
      this.lastChild.style.display = 'block';
      }
      else {
      this.lastChild.style.display = 'none';
      }
    }
    n.onmouseout = function() {
      if(this.lastChild.style.display == 'block') {
      this.lastChild.style.display = 'none';
      }
      else {
      this.lastChild.style.display = 'block';
      }
    }
  } 


}
function mailErr(){
  document.zayavka.onsubmit = function(){
        var eMail = document.getElementById('e-mailerror').value;
        var letter = /^[_\\.0-9a-z-]+@([0-9a-z][0-9a-z_-]+\.)+[a-z]{2,4}$/;
        var mails = document.getElementById('mails');
        if(!letter.exec(eMail) == false && letter.exec(eMail).length > 0){
          mails.style.display = 'none';
            return true;
        }
        else{
          mails.style.display = 'block';
            return false;
        }     
      }
}