var xmlhttp
    var model_id = -1; 
    
	function findPos(obj) 
	{
		var curleft = curtop = 0;
		if (obj.offsetParent) 
		{
			curleft = obj.offsetLeft
			curtop = obj.offsetTop
			while (obj = obj.offsetParent) 
			{
				curleft += obj.offsetLeft
				curtop += obj.offsetTop
			}
		}
		return [curleft,curtop];
	}

	function setCityListPosition()
	{
		document.getElementById('list_container').style.left = findPos(document.newItemForm.queryText)[0]+"px";
		document.getElementById('list_container').style.top = (findPos(document.newItemForm.queryText)[1]+20)+"px";
	}

	function loadXMLDoc(url, functionCall)
	{
	    xmlhttp=null
	    // code for Mozilla, etc.
	    if (window.XMLHttpRequest)
	    {
            xmlhttp=new XMLHttpRequest()
	    }
	    // code for IE
	    else if (window.ActiveXObject)
	    {
		    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
	    }
	    if (xmlhttp!=null)
	    {
		    xmlhttp.onreadystatechange=functionCall
		    xmlhttp.open("GET",url,true)
		    xmlhttp.send(null)
	    }
	    else
	    {
		    alert("Your browser does not support XMLHTTP.")
	    }
	}

	function state_Change()
	{
	// if xmlhttp shows "loaded"
	if (xmlhttp.readyState==4)
		{
		// if "OK"
		if (xmlhttp.status==200)
		{
			var tekst = xmlhttp.responseText;
			var items = new Array();
			items = tekst.split(";");
			document.newItemForm.selObj.options.length = 0;
			if (document.newItemForm.queryText.value != "")
			{
				for (i = 0 ; i < (items.length)-1; i++)
				{
					with (document.newItemForm.selObj)
					{
						id_name = items[i].split("|");
						newItem = options.length;
						options[newItem] = new Option(id_name[1]);
						options[newItem].value = id_name[0];
					}
				}
				document.newItemForm.selObj.style.display = 'inline';
			}
			else
			{
				with (document.newItemForm.selObj)
				{
					document.newItemForm.selObj.options.length = 0;
					document.newItemForm.selObj.style.display = 'none';
				}
				document.newItemForm.selObj.style.display = 'none';
			}
		}
		else
		{
			alert("Problem retrieving data:" + xmlhttp.statusText)
		}
		}
	}
  
  function setEntryTitles()
  {
    var monthArray = new Array();
    monthArray['01'] = "januari";
    monthArray['02'] = "februari";
    monthArray['03'] = "maart";
    monthArray['04'] = "april";
    monthArray['05'] = "mei";
    monthArray['06'] = "juni";
    monthArray['07'] = "juli";
    monthArray['08'] = "augustus";
    monthArray['09'] = "september";
    monthArray['10'] = "oktober";
    monthArray['11'] = "november";
    monthArray['12'] = "december";
    
    // if xmlhttp shows "loaded"
    if (xmlhttp.readyState==4)
    {
      // if "OK"
      if (xmlhttp.status==200)
      {  
        var tekst = xmlhttp.responseText;
        var items = new Array();
        var items = tekst.split(";");
        var entryTable  = document.getElementById('entry_table');
        // verwijder allereerst de children van de entrytable zodat deze leeg is
        if (entryTable.childNodes)
        {
        while(entryTable.firstChild) 
        { 
          entryTable.removeChild(entryTable.firstChild);
        }
        }

        // plaats en de entrytabel de nieuwe entries
        for (i = 0 ; i < (items.length)-1; i++)
        {
          cellValues = items[i].split("|");
          newTR = document.createElement('tr');
          newTD = document.createElement('td');
          newTD.style.paddingLeft = "10px";
          newLink = document.createElement('a');
          newLink.setAttribute('href', 'index.php?w_id='+cellValues[2]+'&s_id='+cellValues[3]+'&e_id='+cellValues[0]+'&date='+cellValues[4]+'&frontpage='+cellValues[5])
          newText = document.createTextNode(" • "+cellValues[1]);
          newLink.appendChild(newText);
          newTD.appendChild(newLink);
          newTR.appendChild(newTD);
          entryTable.appendChild(newTR);  
        }
        // nu moet de datum in de titelbalk nog worden aangepast
        var dateCell = document.getElementById('dateCell'); 
        while(dateCell.firstChild) 
        {
          dateCell.removeChild(dateCell.firstChild); 
        }

        dateParts = cellValues[4].split("_"); 
        if (cellValues[5] != 'true')
          dateCellText = document.createTextNode("Publicaties: "+monthArray[dateParts[1]]+" "+dateParts[0]);
        else 
          dateCellText = document.createTextNode("Laatste publicaties:");
        dateCell.appendChild(dateCellText);
      }
      else
      {
        alert("Problem retrieving data:" + xmlhttp.statusText)
      }
    }
  }

	function loadItemsFromDB(query, event)
	{
		if (event.keyCode == 40)
		{
			checkFocus(event);
		}
		else
		{
			loadXMLDoc('functions/list_loader.php?query='+query, state_Change);
		}
	}
  
  function loadEntriesFromDB(log_id, s_id, date, frontpage, max)
  {
    loadXMLDoc('functions/entry_loader.php?date='+date+'&log_id='+log_id+'&s_id='+s_id+'&frontpage='+frontpage+'&max='+max, setEntryTitles);
  }

	function doSel(value,text)
	{
		document.newItemForm.queryText.value = text;
		document.newItemForm.nl_id.value = value;
		document.newItemForm.selectedValue.value = value;
		document.newItemForm.selObj.options.length = 0;
		document.newItemForm.selObj.style.display = 'none';
	}

	function hideList()
	{
		document.newItemForm.queryText.value = document.newItemForm.selectedValue.value;
		document.newItemForm.selObj.options.length = 0;
		document.newItemForm.selObj.style.display = 'none';
	}

	function checkFocus()
	{
		if (document.newItemForm.selObj.style.display != 'none')
		{
			document.newItemForm.selObj.focus();
		}
	}

	function checkSelection(value, text, event)
	{
		if (event.keyCode == 13)
		{
			doSel(value, text);
		}
	}
        
    var rate = -1;  
    
    function fillStars(starNumber)
    {
        for (var i = 1; i <= starNumber; i++)
        {
            var star = document.getElementById("star_"+i);
            star.src = "images/star_blue.png";
        }  
    }
    
    function setMediaRate(_rate)
    {
        rate = _rate;
    }
    
    function clearStars()
    {
        for (var i = 1; i <= 5; i++)
        {
            var star = document.getElementById("star_"+i); 
            if (rate - (i*2) >= 0)
            {
                star.src = 'images/star_red.png';     
            }
            else if (rate - (i*2) <= 0 &&  rate - (i*2) >= -1)
            {
                star.src = 'images/star_red_grey.png'; 
            }
            else
            {
                star.src = 'images/star_grey.png';  
            }
        }  
    }
    
    function disableStars()
    {
        for (var i = 1; i <= 5; i++)
        {
            var star = document.getElementById("star_"+i); 
            star.onmouseover  = null;
            star.onmouseout   = null;
            star.onclick      = null;
        } 
        var div = document.getElementById('allready_voted');
        div.style.display = 'block';
    }
    
    function updateMediaVote(hash, rate, ip)
    {
        loadXMLDoc('functions/media_vote.php?hash='+hash+'&rate='+rate+'&ip='+ip, handleMediaVote);
    }
        
    function handleMediaVote()
    {
        // if xmlhttp shows "loaded"
        if (xmlhttp.readyState==4)
        {
            // if "OK"
            if (xmlhttp.status==200)
            {
                var xmlDoc = xmlhttp.responseXML.documentElement;
                var rate = xmlDoc.getElementsByTagName("rate")[0].childNodes[0].nodeValue;
                setMediaRate(rate);
                clearStars(rate);
                disableStars();
            }
            else
            {
                alert("Problem retrieving data:" + xmlhttp.statusText)
            }
        }
    }
    
function loadTypesForMake(a_url, make_id, a_model_id)
{
    model_id = a_model_id;
    document.getElementById('typeSelect').disabled = "disabled";
    url = a_url+make_id;
    loadXMLDoc(url, setMakeTypes);
}
    
function setMakeTypes()
{
    if (xmlhttp.readyState==4)
    {   // 4 = "loaded"
        if (xmlhttp.status==200)
        {   // 200 = OK
            var xml     = xmlhttp.responseXML.documentElement;
            var models  = xml.getElementsByTagName('model'); 
            with (document.getElementById('typeSelect'))
            {
                options.length          = 0;
                options[0]              = new Option('selecteer...');
                options[0].value        = -1;
                for (i = 0 ; i < models.length; i++)
                {                
                    newItem                 = options.length; 
                    options[newItem]        = new Option(models[i].getElementsByTagName('description')[0].firstChild.nodeValue);
                    options[newItem].value  = models[i].getElementsByTagName('id')[0].firstChild.nodeValue;
                    if (options[newItem].value == model_id)
                    {
                        options[newItem].selected = true;
                    }
                }
                disabled = "";
            } 
        }
        else
        {
            alert("Problem retrieving XML data");
        }
    }
}

function setOrderByValue(a_order_by, a_direction)
{
    with (document.queryForm)
    {
        order_by.value      = a_order_by;
        order_by_dir.value  = a_direction;
        submit();
    }
}

function resetCompanyList()
{
    with (document.queryForm)
    { 
        company_id.selectedIndex = 0;
    }
}

function selectOccasion(a_auto_id)
{
    with (document.queryForm)
    {
        auto_id.value = a_auto_id;
        submit();
    }
}

function submitOccasionForm()
{
    with (document.queryForm)
    {
        if (year_from.value != "" && IsNumeric(year_from.value) == false)
        {
            year_from.focus();
            alert("U dient een geldig waarde in het veld 'bouwjaar van' in te voeren");
        }
        else if (year_until.value != "" && IsNumeric(year_until.value) == false)
        {
            year_until.focus();  
            alert("U dient een geldig waarde in het veld 'bouwjaar tot' in te voeren");
        }
        else if (IsNumeric(year_until.value) && IsNumeric(year_from.value) && parseInt(year_from.value) > parseInt(year_until.value) )
        {
            year_until.focus();
            alert("De waarde van 'bouwjaar tot' dient groter te zijn dan 'bouwjaar van'."); 
        }
        else if (price_from.value != "" && IsNumeric(price_from.value) == false)
        {
            price_from.focus();
            alert("U dient een geldig waarde in het veld 'prijs van' in te voeren");
        }
        else if (price_until.value != "" && IsNumeric(price_until.value) == false)
        {
            price_until.focus();  
            alert("U dient een geldig waarde in het veld 'prijs tot' in te voeren");
        }
        else if (IsNumeric(price_until.value) && IsNumeric(price_from.value) && parseInt(price_from.value) > parseInt(price_until.value) )
        {
            year_until.focus();
            alert("De waarde van 'prijs tot' dient groter te zijn dan 'prijs van'."); 
        }
        else
        {
            submit();
        }
    }
}

function IsNumeric(sText)
{
    var ValidChars = "0123456789";
    var IsNumber=true;
    var Char;
    for (i = 0; i < sText.length && IsNumber == true; i++) 
    { 
        Char = sText.charAt(i); 
        if (ValidChars.indexOf(Char) == -1) 
        {
            IsNumber = false;
        }
    }
    return IsNumber;
}

function raiseMediaViews(id) 
{
    var currentTime = new Date()
    var time = currentTime.getTime();
    loadXMLDoc('functions/media_raise_views.php?id='+id+'&time='+time, mediaViewsRaised);
}

function mediaViewsRaised()
{
    //alert('raised');
}