// JavaScript Document
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);
	return false;
}


function processRequest(httpRequest, kam) 
{
    if (httpRequest.readyState == 4)
    {
        if (( httpRequest.status >= 200 && httpRequest.status < 300 ) || httpRequest.status == 304)
        {
			if (typeof kam == 'string') 
            {
				var name=kam.split('#');
				var object=document.getElementById(name[1]);
				if (name[0] == 'input')
					{
                	object.value = httpRequest.responseText;
					}
				if (name[0] == 'div')
					{
					var newElem, content;
					newElem = document.createElement('div');
					newElem.innerHTML = httpRequest.responseText;
					if(object !== null){
						object.innerHTML='';
					    object.appendChild(newElem);
					  }
                	//object.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') 
        {
			var name=kam.split('#');
			var object=document.getElementById(name[1]);
				if (name[0] == 'input')
					{
                	object.value = 'Zpracovávám požadavek...';
					}
				if (name[0] == 'div')
					{
					object.innerHTML = '<img src=\"'+webroot+'/graph/loader.white.gif\" />&nbsp;&nbsp;zpracovávám požadavek...';
					}
        }
    }
       
}