function validate(div) {
		if(document.getElementById(div).style.display=="none")
			document.getElementById(div).style.display="";
		else
			document.getElementById(div).style.display="none";
}

function form() {
	setInterval("refresher()", 1200);
	document.getElementById('say').innerHTML='Probíhá upload obrázku<br>';
	document.getElementById('action').style.display='none';
}


function refresher() {
	document.getElementById('say').innerHTML=document.getElementById('say').innerHTML+'. '
}

function ajax(stranka, kam)
{

    var httpRequest;
    
    if(typeof window.ActiveXObject != 'undefined')
    {
        httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else
    {  
        httpRequest = new XMLHttpRequest();
    }
    httpRequest.open("GET", stranka, true);
    httpRequest.onreadystatechange= function () 
    {
        processRequest(httpRequest, kam) 
    };
    httpRequest.send(null);
}


function processRequest(httpRequest, kam) 
{
    if (httpRequest.readyState == 4)
    {
        if(httpRequest.status == 200)
        {
            if (typeof kam == 'string') 
            {
                document.getElementById(kam).innerHTML = httpRequest.responseText;
            }
            if (typeof kam == 'function') 
            {
                kam(httpRequest.responseText);
            }
        }
        else
        {
            alert("Chyba pri nacitani stanky " + httpRequest.status +" : "+ httpRequest.statusText);
        }
    }
    else
    {
        if (typeof kam == 'string' && kam != '') 
        {
            document.getElementById(kam).innerHTML = ' [ nacitam .. ] ';
        }
    }
       
} 

function vystup(msg)
{
    alert(msg);
}