var levelXmlHttp;

//Get schools

function showLevels(str, dict, lev, lang, year)
{ 
	if(str.charAt(0)=='l')
	{
		enterBlankLevels();
		showSchools( lang, dict, str.substr(1, str.length-1), lev );
	}
	else
	{

		levelXmlHttp=GetlevelXmlHttpObject();
		if (levelXmlHttp==null)
 		{
 			alert ("Browser does not support HTTP Request");
 			return;
 		}
 
		var url="getLevels.php";
		url=url+"?dict="+dict+"&lev="+lev+"&year="+year+"&sid"+Math.random();
		document.getElementById("level").innerHTML = " <img src='loader.gif' alt=''/>"; 
		levelXmlHttp.onreadystatechange=levelChanged;
		levelXmlHttp.open("GET",url,true);
		levelXmlHttp.send(null);

		enterBlankDates;
		enterBlankDurations;
		enterBlankCourses;
	}
}

function levelChanged() 
{ 
	if (levelXmlHttp.readyState==4 || levelXmlHttp.readyState=="complete")
 	{
 		document.getElementById("leveldiv").innerHTML=levelXmlHttp.responseText;
 	} 
}

function GetlevelXmlHttpObject()
{
	var levelXmlHttp=null;
	try{// Firefox, Opera 8.0+, Safari
 		levelXmlHttp=new XMLHttpRequest();}
	catch (e){//Internet Explorer
 		try{levelXmlHttp=new ActiveXObject("Msxml2.XMLHTTP");}
 		catch (e){levelXmlHttp=new ActiveXObject("Microsoft.XMLHTTP");}
 	}
	return levelXmlHttp;
}

function changeLevelClass(isSelected)
{
	var classString="level";
		

	if(!isSelected)
	{
		classString="levelEmpty";
	}
	

	document.getElementById("level").className = classString;
}