function ajax(stranka, kam, pathinfo)
{

    var httpRequest;
    
    if(typeof window.ActiveXObject != 'undefined')
    {
        httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else
    {  
        httpRequest = new XMLHttpRequest();
    }
    httpRequest.open("POST", stranka, true);
    httpRequest.onreadystatechange= function () 
    {
        processRequest(httpRequest, kam) 
    };
    httpRequest.send(null);
	if(pathinfo!=false) {
		document.getElementById('pathViewer').innerHTML = pathinfo; 
	}
	
}
function processRequest(httpRequest, kam) 
{
    if (httpRequest.readyState == 4)
    {
        if(httpRequest.status == 200)
        {
            if (typeof kam == 'string') 
            {
                document.getElementById(kam).innerHTML = httpRequest.responseText;
				tinyMCE.execCommand("mceAddControl", true, "elm1");
			}
            if (typeof kam == 'function') 
            {
                kam(httpRequest.responseText);
				tinyMCE.execCommand("mceAddControl", true, "elm1");
            }
        }
        else
        {
            alert("Chyba při načítání stránky.. zkuste to znovu. " + httpRequest.status +" : "+ httpRequest.statusText);
        }
    }
    else
    {
        if (typeof kam == 'string' && kam != '') 
        {
            document.getElementById(kam).innerHTML = '<div class="ProgressBox"><img src="public/images/download-progress.gif" /></div>';
        }
    }
       
}