//globals 
var selected   				= "1";      	// id of homepage 

// 
function sendRequest(url,params,HttpMethod) 
{ 
	// check if http method is defined, if not, set it to GET
    if(!HttpMethod) 
    {    
        HttpMethod="GET"; 
    } 
    
    // initialize request object 
    req=null; 
    if(window.XMLHttpRequest)
    {    
        req=new XMLHttpRequest; //mozilla/safari 
    } 
    else if(window.ActiveXObject)
    {    
        req=new ActiveXObject("Microsoft.XMLHTTP"); //internet explorer 
    } 

//define callback handler 
    if(req) 
    { 
        //    
        req.onreadystatechange=onReadyState;    
        req.open(HttpMethod,url,true);    
        req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");    
        req.send(params); 
    } 
} 

function onReadyState() 
{ 
    // 
    var ready=req.readyState; 
    var data=null; 
    //

	if(ready==4)
    {      
		var content_text = document.getElementById('right_news'); //create option       
		content_text.innerHTML = req.responseText;
    } 
}

function show_news(t) 
{ 
	
	if(screen.height >= 0 && screen.height < 800) {
		
		var selected = 1;
	} else if(screen.height == 800) {
		
		var selected = 1;
	} else if(screen.height == 864) {
		
		var selected = 2;
	} else if(screen.height == 900) {
		
		var selected = 3;
	} else if(screen.height == 960) {
		
		var selected = 3;
	} else if(screen.height == 1050) {
		
		var selected = 3;
	} else if(screen.height == 1024) {
		
		var selected = 3;
	} else if(screen.height == 1080) {
		
		var selected = 4;
	} else if(screen.height == 1200) {
		
		var selected = 5;
	} else {
		
		var selected = 1;
	}

	sendRequest('fetch_content.php?aantal='+selected+'&t='+t);   
}