function initit(list, img, stylesheetpath)
{
    var show = GetCookie(list);
    
    if (document.getElementById)
        var listElement = document.getElementById(list);
    else if (document.all)
        var listElement = document.all[list];
    else if (document.layers)
        var listElement = document.layers[list];
    
    var listElementStyle=listElement.style;
      
    if (show == "true"){
        listElementStyle.display="block";
    }
    else{
        listElementStyle.display="none";
    }
}
 
function switchit(list,img,stylesheetpath){
    
    if (document.getElementById)
        var listElement = document.getElementById(list);
    else if (document.all)
        var listElement = document.all[list];
    else if (document.layers)
        var listElement = document.layers[list];

    var listElementStyle=listElement.style;
    
    //primer els tanquem tots 
    tancarTots(list);    
    
    if (listElementStyle.display=="none"){
        listElementStyle.display="block";
        SetCookie(list,"true");
    }
    else {
        listElementStyle.display="none";
        SetCookie(list,"false");
    }
}
 
function SetCookie(name, value, expires, path, domain) 
{ 
    document.cookie = name + "=" + escape(value) + 
    ((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
    ((path == null)    ? "" : "; path=" + path) +
    ((domain == null)  ? "" : "; domain=" + domain);
}
 
function GetCookie(name)
{ 
    var cname = name + "=";               
    var dc = document.cookie;             
    if (dc.length> 0) 
    { 
        begin = dc.indexOf(cname);       
        if (begin != -1) 
        { 
            begin += cname.length;       
            end = dc.indexOf(";", begin);
            if (end == -1) end = dc.length;
            return unescape(dc.substring(begin, end));
        } 
    }
    return null;
}
 
function DelCookie (name,path,domain) 
{ 
    if (getCookie(name)) 
    { 
        document.cookie = name + "=" +
        ((path == null) ? "" : "; path=" + path) +
        ((domain == null) ? "" : "; domain=" + domain) +
        "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
} 

function mostrar(list,img,stylesheetpath){
    
    var obrir = true;
    var listElement = null;
    
    if (document.getElementById)
    {
        listElement = document.getElementById(list);
    }
    else if (document.all)
    {
        listElement = document.all[list];
    }
    else if (document.layers)
    {
        listElement = document.layers[list];
    }

    //alert('listElement : ' + listElement);
    
    //primer els tanquem tots 
    //tancarTots();

    if(listElement != null)
    {
        var listElementStyle=listElement.style;
        
        if (listElementStyle.display=="none"){
            listElementStyle.display="block";
            SetCookie(list,"true");
        }
    }
}

function tancar(list,img,stylesheetpath){
    
    var obrir = true;
    var listElement = null;
    
    if (document.getElementById)
    {
        listElement = document.getElementById(list);
    }
    else if (document.all)
    {
        listElement = document.all[list];
    }
    else if (document.layers)
    {
        listElement = document.layers[list];
    }

    //alert('listElement : ' + listElement);

    if(listElement != null)
    {
        var listElementStyle=listElement.style;
        
        if (listElementStyle.display=="block"){
            listElementStyle.display="none";
            SetCookie(list,"false");
        }
    }
}

function tancarTots(list){

    if(list != 'nav_1')
        tancar('nav_1','collapse1','');
        
    if((list != 'nav_2')&&(list != 'nav_21')&&(list != 'nav_27')&&(list != 'nav_37'))
        tancar('nav_2','collapse1','');

    if(list != 'nav_21')
        tancar('nav_21','collapse1','');

    if(list != 'nav_27')
        tancar('nav_27','collapse1','');
        
    if(list != 'nav_37')
        tancar('nav_37','collapse1','');
}


/*function buscarPorTagName (propiedad) {
        
        var elementos = document.getElementsByTagName('ul')
        
        for (var i = 0; i < elementos.length; i++ )
            elementos[i].style.display = propiedad;

} */