function eShow(eid){
	document.getElementById(eid).style.display = "block";
}

function eHide(eid){
	document.getElementById(eid).style.display = "none";
}

function reload(name, el) {
	var parent = document.getElementsByName(name)[0];

	parent.href = el.href;
	parent.innerHTML = el.innerHTML;

	eHide("subject");
	eHide("level");
	eHide("grade");
	eHide("year");

	getList();
}

function GetXmlHttpObject() {
	var xmlHttp=null;
	try
	  {
	  xmlHttp=new XMLHttpRequest();
	  }
	catch (e)
	  {
	  try
	    {
	    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	    }
	  catch (e)
	    {
	    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	    }
	  }
	return xmlHttp;
}

function getList() {
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp == null) {
		window.location = "http://takmicenja.mg-forum.net/lista/";
	return;
	} 	

	document.getElementById("comps").innerHTML = '<div id="loading"><div class="first" style="width: 500px;">Lista takmi&#269;enja se u&#269;itava...</div></div>';
	document.getElementById("comps").innerHTML += '<div class="clear"></div></div><div class="clear"></div><div class="bottom"></div>';

	var url = "http://takmicenja.mg-forum.net/list.php?subject=";

	var parent = document.getElementsByName("sbj")[0];
	url += parent.href.replace(/http:\/\/takmicenja\.mg-forum\.net\//,"") + "&level=";
	parent = document.getElementsByName("lvl")[0];
	url += parent.href.replace(/http:\/\/takmicenja\.mg-forum\.net\//,"") + "&grade=";
	parent = document.getElementsByName("grd")[0];
	url += parent.href.replace(/http:\/\/takmicenja\.mg-forum\.net\//,"") + "&year=";
	parent = document.getElementsByName("yr")[0];
	url += parent.href.replace(/http:\/\/takmicenja\.mg-forum\.net\//,"") + "rnd=" + Math.random();

	xmlHttp.onreadystatechange = stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged() { 
	if (xmlHttp.readyState==4) { 
		document.getElementById("comps").innerHTML=xmlHttp.responseText;
	}
}