function login()
{
	tb_show("Belépés", "login.php?keepThis=true&TB_iframe=true&height=100&width=250&modal=true", false);
}
function validateSearchForm()
{
	if (!isWhitespace(document.forms.search.search_text.value))
	{
		return true;
	}else{
		return false;
	}
}
var whitespace = " \t\n\r";
function isEmpty(s)
{
	return ((s == null) || (s.length == 0))
}
function isWhitespace (s)
{
	var i;
	if (isEmpty(s)) return true;
	for (i = 0; i < s.length; i++)
	{
		var c = s.charAt(i);
		if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}
function bookmark(){
	var url = window.location;
	var title = document.title;
	var os;
	if(document.layers)
		os = "n4";
	else if(document.getElementById&&!document.all)
		os = "n6";
	else if(document.all)
		os = "ie";
	if(window.sidebar) 
          window.sidebar.addPanel(title,url,"");
	else if(window.opera && window.print){
          var elem = document.createElement('a');
          elem.setAttribute('href',url);
          elem.setAttribute('title',title);
          elem.setAttribute('rel','sidebar');
          elem.click();
	}
	else if(os == "ie")
          window.external.AddFavorite(url,title);
}
function setHomePage()
{
	document.body.style.behavior='url(#default#homepage)';
	document.body.setHomePage(document.location);
}