function SendEmailConf(){
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
	  alert ("Your browser does not support XMLHTTP!");
	  return;
	  }	
	  
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET","check_s2f_session.php",true);
	xmlhttp.send(null);	
	
	document.getElementById('sendemail').style.display = "block";
	document.getElementById('send2friend_template').style.display = "block";
	document.getElementById('send2friendsent_template').style.display = "none";
	document.getElementById('your_name').value = "";
	document.getElementById('your_email').value = "";
	document.getElementById('friend_name').value = "";
	document.getElementById('friend_email').value = "";
	document.getElementById('message').value      = "";
	document.getElementById('msgbox').style.display = "none";
	document.getElementById('overlay').style.display = "block";
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}

function stateChanged(){

}

function HideSendEmailConf(){
	document.getElementById('sendemail').style.display = "none";
	document.getElementById('overlay').style.display = "none";
}

function VotingConf(){
	document.getElementById('voting').style.display = "block";
	document.getElementById('overlay').style.display = "block";
	document.getElementById('voting_template').style.display = "block";
	document.getElementById('voting_template_code').style.display = "none";
	document.getElementById('voting_template_thanks').style.display = "none";
	document.getElementById('phone_nr').value = "";
	document.getElementById('sms_code').value = "";
	document.getElementById('captcha_code').value = "";
	document.getElementById('msgbox_vote').style.display = "none";
	document.getElementById('msgbox_vote_st2').style.display = "none";
	document.getElementById('msgbox_vote_st3').style.display = "none";
}


function HideVotingConf(){
	document.getElementById('voting').style.display = "none";
	document.getElementById('overlay').style.display = "none";
	document.location.reload();
}

function SetStep(step){
	document.getElementById('vtn').value = "stp"+step;
	//alert(document.getElementById('vtn').value);
}

function openRegulation(){
	scroll(0,0);
	document.getElementById('regulationDiv').style.display = "block";
	document.getElementById('contactDiv').style.display = "none";
	document.getElementById('announcementDiv').style.display = "none";
}

function closeRegulation(){
	document.getElementById('regulationDiv').style.display = "none";
}

function openAnnouncement(){
	scroll(0,0);
	document.getElementById('announcementDiv').style.display = "block";
	document.getElementById('regulationDiv').style.display = "none";
	document.getElementById('contactDiv').style.display = "none";
}

function closeAnnouncement(){
	document.getElementById('announcementDiv').style.display = "none";
}

function openContact(){
	scroll(0,0);
	document.getElementById('contactDiv').style.display = "block";
	document.getElementById('announcementDiv').style.display = "none";
	document.getElementById('regulationDiv').style.display = "none";
}

function closeContact(){
	document.getElementById('contactDiv').style.display = "none";
}
<!--
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}