/* AJAX UPLOADER/FORM-SENDER */
function createXMLHttpRequest(){
	if(window.ActiveXObject){
		var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){
		var xmlHttp = new XMLHttpRequest();
	}
	return xmlHttp;
}

function selectItem(id){
	var url="processExamen.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setForm(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("id="+id+"&mode=select");
}

function selectRooster(id){
	var url="processRooster.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setForm2(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("id="+id+"&mode=select");
}

function deleteItem(id, gid){
	var url="processExamen.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setAll(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("id="+id+"&gid="+gid+"&mode=delete");
}

function deleteRooster(id, gid){
	var url="processRooster.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setAll2(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("id="+id+"&gid="+gid+"&mode=delete");
}

function setAll(xmlHttp){
	if(xmlHttp.readyState == 4){
		if(xmlHttp.status == 200){
			var response = xmlHttp.responseText;
			document.getElementById("examenRooster").innerHTML = response;
		}
	}
}

function setAll2(xmlHttp){
	if(xmlHttp.readyState == 4){
		if(xmlHttp.status == 200){
			var response = xmlHttp.responseText;
			document.getElementById("roosterRooster").innerHTML = response;
		}
	}
}

function setForm(xmlHttp){
	if(xmlHttp.readyState == 4){
		if(xmlHttp.status == 200){
			var response = xmlHttp.responseText;
			document.getElementById("examenForm").innerHTML = response;
		}
	}
}

function setForm2(xmlHttp){
	if(xmlHttp.readyState == 4){
		if(xmlHttp.status == 200){
			var response = xmlHttp.responseText;
			document.getElementById("roosterForm").innerHTML = response;
		}
	}
}

function startCallback() {
            // make something useful before submit (onStart)
            return true;
        }

function completeCallback(response) {
	// make something useful after (onComplete)
	var container	= document.getElementById("examenRooster");
	document.getElementById("year").value = "";
	container.innerHTML = response;
}

function completeCallback2(response) {
	// make something useful after (onComplete)
	var container	= document.getElementById("roosterRooster");
	var gid			= document.getElementById("itemGroupid").value;
	
	container.innerHTML = response;
	resetForm(gid);
}

function resetForm(gid){
	var url="processRooster.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setForm2(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("gid="+gid+"&mode=reset");
}

function resetExamen(gid){
	var url="processExamen.php";

	var xmlHttp = createXMLHttpRequest();
	xmlHttp.onreadystatechange = function(){setForm(xmlHttp);}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xmlHttp.send("gid="+gid+"&mode=reset");
}

AIM = {

    frame : function(c) {

        var n = 'f' + Math.floor(Math.random() * 99999);
        var d = document.createElement('DIV');
        d.innerHTML = '<iframe style="display:none" src="about:blank" id="'+n+'" name="'+n+'" onload="AIM.loaded(\''+n+'\')"></iframe>';
        document.body.appendChild(d);

        var i = document.getElementById(n);
        if (c && typeof(c.onComplete) == 'function') {
            i.onComplete = c.onComplete;
        }

        return n;
    },

    form : function(f, name) {
        f.setAttribute('target', name);
    },

    submit : function(f, c) {
        AIM.form(f, AIM.frame(c));
        if (c && typeof(c.onStart) == 'function') {
            return c.onStart();
        } else {
            return true;
        }
    },

    loaded : function(id) {
        var i = document.getElementById(id);
        if (i.contentDocument) {
            var d = i.contentDocument;
        } else if (i.contentWindow) {
            var d = i.contentWindow.document;
        } else {
            var d = window.frames[id].document;
        }
        if (d.location.href == "about:blank") {
            return;
        }

        if (typeof(i.onComplete) == 'function') {
						//var name = d.getElementById("name").innerHTML;
						var response = d.body.innerHTML;
            i.onComplete(response);
        }
    }

}

/* EINDE AJAX UPLOADER/FORM-SENDER */

function validateform(form) {
	var box = document.getElementById(form).elements;
	for (i=0;i<box.length;i++) {
		if ((!box[i].value) && (box[i].type != 'hidden' && box[i].type != 'select-one' && box[i].name != 'tekst') && box[i].name != 'url' && box[i].name != 'datumtot')	{
			alert('U heeft het veld: "' + box[i].name + '" niet ingevuld!');
			box.focus();
			return false;
		}
	}
	return true;

}

function MM_showHideLayers() { //v6.0
	var i,p,v,obj,args=MM_showHideLayers.arguments;
	for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
		if (obj.style) { obj=obj.style; v=(v=='show')?'block':(v=='hide')?'none':v; }
		obj.display=v; }
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function CMSdisplayTab(tab,panel,tablink) {
		// Set all div panels except current to display:none
    var divCollection = document.getElementsByTagName("div");
    for (var i=0; i<divCollection.length; i++) {
				if (divCollection[i].getAttribute("id")) {
						// Get length
						var iLen = divCollection[i].getAttribute("id").length;

						// Search for _panel
						if (iLen>6 && divCollection[i].getAttribute("id").substring(iLen, iLen-6)=="_panel") {

								// Set specified panel to display:block and all others panels to display:none
								if (divCollection[i].getAttribute("id")==panel) {				
										divCollection[i].style.display = 'block';
								} else {
										divCollection[i].style.display = 'none';
								}
						}

						// Search for _tab: remember we have 3 subtabs: left / center / right
						tab_left   = tab + "_left";
						tab_center = tab + "_center";
						tab_right  = tab + "_right";
						
						if (iLen>9 && divCollection[i].getAttribute("id").substring(iLen, iLen-9)=="_tab_left") {
								
								// Set specified tab to display:block and all others panels to display:none
								if (divCollection[i].getAttribute("id")==tab_left) {				
										divCollection[i].className = 'tab_page_left_selected';
								} else {
										divCollection[i].className = 'tab_page_left';
								}
						}
						if (iLen>11 && divCollection[i].getAttribute("id").substring(iLen, iLen-11)=="_tab_center") {
								
								// Set specified tab to display:block and all others panels to display:none
								if (divCollection[i].getAttribute("id")==tab_center) {				
										divCollection[i].className = 'tab_page_center_selected';
								} else {
										divCollection[i].className = 'tab_page_center';
								}
						}
						if (iLen>10 && divCollection[i].getAttribute("id").substring(iLen, iLen-10)=="_tab_right") {
								
								// Set specified tab to display:block and all others panels to display:none
								if (divCollection[i].getAttribute("id")==tab_right) {				
										divCollection[i].className = 'tab_page_right_selected';
								} else {
										divCollection[i].className = 'tab_page_right';
								}
						}
				}
    }


    var linkCollection = document.getElementsByTagName("a");
		for (var i=0; i<linkCollection.length; i++) {
						if (linkCollection[i].getAttribute("id")) {
								// Get length
								var iLen = linkCollection[i].getAttribute("id").length;
								
								// Search for _link
								if (iLen>5 && linkCollection[i].getAttribute("id").substring(iLen, iLen-5)=="_link") {
		
										// Set specified panel to display:block and all others panels to display:none
										if (linkCollection[i].getAttribute("id")==tablink) {				
												linkCollection[i].style.color = '#F86C00';											
										} else {
												linkCollection[i].style.color = '#808080';
										}
								}
						}
		}
}

function CMScheckFormFields(formfields) {
		var result = true;
		var fields = formfields.split(',');
    for (var i=0; i<fields.length; i++) {
				field = fields[i];
				var elm = document.getElementById(field);
				if (elm.value=='') {
						result = false;
						elm.className = 'input2_req';
				} else {
						elm.className = 'input2';
				}		
		}
		
		// Error display
		if (result==false) {
    		var divCollection = document.getElementsByTagName("div");
		    for (var i=0; i<divCollection.length; i++) {
						if (divCollection[i].getAttribute("id")=='error_message') {
								divCollection[i].style.display = 'block';
						}
				}				
		}
		
		// Result
		return result;
}

function CMScheckFormFields2(formfields, formName, mode) {
		//set Mode
		document.getElementById("mode").value = mode;
	
		var result = true;
		var fields = formfields.split(',');
    for (var i=0; i<fields.length; i++) {
				field = fields[i];
				var elm = document.getElementById(field);
				if (elm.value=='') {
						result = false;
						elm.className = 'input2_req';
				} else {
						elm.className = 'input2';
				}		
		}
		
		// Error display
		if (result==false) {
    		var divCollection = document.getElementsByTagName("div");
		    for (var i=0; i<divCollection.length; i++) {
						if (divCollection[i].getAttribute("id")=='error_message') {
								divCollection[i].style.display = 'block';
						}
				}				
		}
		else{
			document.f.submit();
		}
		
		// Result
		return result;
}

function deleteQuestion(id, cursus_group_id, siteid, langid) 
{
	if (confirm('Weet u zeker dat u deze vraag (en zijn antwoorden) wilt verwijderen?')) 
	{
		makeRequest('ajax_functions.php', 'question_answers', '&mode=overview_questions_answers&action=delete&id=' + id + '&cursus_group_id=' + cursus_group_id + '&siteid=' + siteid + '&langid=' + langid);
	}
}