function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(action,ammount,url) {
    http.open('get', 'cartupdate.php?action='+action+'&ammount='+ammount+'&url='+url);
    http.onreadystatechange = handleResponse;
    http.send(null);
    //freefrom();
}


function chExtra(gerecht_id,option_id,optionresults) {
optionvalues = "";
 if(optionresults!='none')
 {
    for (var loop = 0; loop <optionresults.length; loop++)
   {
      optionvalues += document.forms[0].elements[optionresults[loop]].value + "_";
   } 
 }
 else
 {
  optionvalues = "none";
 }
    http.open('get', 'getoptions.php?gid='+gerecht_id+'&eid='+option_id+'&oid='+optionvalues);
    http.onreadystatechange = showOptions;
    http.send(null);
}

function chGarnish(gerecht_id,optionresults) {
    
    optionvalues = "";
    for (var loop = 0; loop <optionresults.length; loop++)
   {
      optionvalues += document.forms[0].elements[optionresults[loop]].value + "_";
   } 
   if(eval("document.forms[0].elements['optie[" + gerecht_id + "]']"))
   {
    extravalues = eval("document.forms[0].elements['optie[" + gerecht_id + "]'].value");
   }
   else
   {
    extravalues = "none";
   }
    http.open('get', 'getgarnish.php?gid='+gerecht_id+'&oid='+optionvalues+'&eid='+extravalues);
    http.onreadystatechange = showOptions;
    http.send(null);
}

function getCat(newcategory,current) {
    http.open('get', 'showmenu.php?category='+newcategory+'&current='+current);
    http.onreadystatechange = showCat;
    http.send(null);
}

function chMultipleGarnish(gerecht_id, subprice, checked) {
    
    var totaalprijs = document.getElementById('mprice_'+gerecht_id).innerHTML;
    totaalprijs = totaalprijs.replace(',', '.');
    //totaalprijs = parseFloat(totaalprijs);
    totaalprijs = Number(totaalprijs);
    subprice	= Number(subprice);
    
    //alert(totaalprijs +' | '+subprice+' | '+checked);
    
    if(checked) {
	newtotal = totaalprijs + subprice;
    } else {
	newtotal = totaalprijs - subprice;
    }
    
    newtotal = newtotal.toFixed(2).replace('.',',');
    
    //alert(newtotal);
   document.getElementById('mprice_'+gerecht_id).innerHTML = newtotal;
    
    
}

function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();         	
        if(response.indexOf('|' != -1)) {
            update = response.split('|');
            document.getElementById('itog').value = update[1];         	            
			document.getElementById(update[2]).innerHTML = update[3];
            document.getElementById(update[4]).value = update[5];
			document.getElementById('bkost').style.display = update[6];
			document.getElementById('buttons').style.display = update[7];
			
			//eval ('window.location.href="/bestelonline.php?category=99"');
			eval (update[8]);
			
			// update[9] = 2 hoofdgerechten voor gratis pizza.
			if( update[9] != 0 )
			{
				//alert('gratis pizza');
				//window.location = "bestelonline.php";
				document.getElementById('gratispizza-container').innerHTML = "<div id='gratispizza' style='color:#ffffff;'><span class='font-h5'>Gratis pizza</span><br /><a href='bestelonline.php?gp=1' style='color:White;'>Kies een smaak</a></div>";
			}
			else
			{
				document.getElementById('gratispizza-container').innerHTML = "";
			}
		}
    }
	}

function showCat() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();
                
        if(response.indexOf('|' != -1)) {
           update = response.split('|');
           document.getElementById('menucontent').innerHTML = update[3];
           document.getElementById(update[1]).style.color="red";
           document.getElementById(update[2]).style.color="black";
        }
    }
}

function showOptions() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();
                
        if(response.indexOf('|' != -1)) {
           update = response.split('|');
           document.getElementById(update[0]).innerHTML = update[1]; 
        }
    }
}