//var height = document.documentElement.clientHeight;
function intro() {

  var elem = document.getElementById("main");
  elem.style.display="none";

  var is_ie/*@cc_on = {
  // quirksmode : (document.compatMode=="BackCompat"),
  version : parseFloat(navigator.appVersion.match(/MSIE (.+?);/)[1])
}@*/;

	if (is_ie) {
		var height = document.documentElement.clientHeight;
		var div = 4;
	} else	{
		var height = window.innerHeight;
		var div = 2;
	}
		
	var elem = document.getElementById("main");
	
	
	var img = document.getElementById("logoimg");
	
	var top = (height - img.height)/div;
	
	//alert(top);
	
	document.getElementById("main").style.marginTop = top+"px";
	
	elem.style.display="block";
	
	
}


function main() {

var elem = document.getElementById("main");
  elem.style.display="none"

  var is_ie/*@cc_on = {
  // quirksmode : (document.compatMode=="BackCompat"),
  version : parseFloat(navigator.appVersion.match(/MSIE (.+?);/)[1])
}@*/;

	if (is_ie) {
		var height = document.documentElement.clientHeight;
		var div = 4;
	} else	{
		var height = window.innerHeight;
		var div = 2;
	}
		
	//var elem = document.getElementById("main");
	
	var top = (height - 550)/2;
	
	//alert("x");
	
	document.getElementById("main").style.marginTop = top+"px";
	
	elem.style.display="block";
	
	
}


//nastavi titulok do formularoveho pola museum
function setMuseum(title) {
    title = decodeURI(title);
    if(title != "" && $('museum') != null) {
        $('museum').value = title;
    }   
}