var xmlhttp

function productFilter(strObject)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var str = "";
	if (document.getElementById('filterCategorie') != null) var filterCategorie = document.getElementById('filterCategorie').value;
	if (document.getElementById('filter-bespannen') != null) var filterBespannen = document.getElementById('filter-bespannen').value;
	if (document.getElementById('filter-gewicht') != null) var filterGewicht = document.getElementById('filter-gewicht').value;
	if (document.getElementById('filter-bladgrootte') != null) var filterBladgrootte = document.getElementById('filter-bladgrootte').value;
	if (document.getElementById('filter-lengte') != null) var filterLengte = document.getElementById('filter-lengte').value;
	if (document.getElementById('filter-merk') != null) var filterMerk = document.getElementById('filter-merk').value;
	if (document.getElementById('filter-sorteer') != null) var filterSorteer = document.getElementById('filter-sorteer').value;

	if(filterCategorie != '') str += "categorie="+filterCategorie+"&";
	if(filterBespannen != '') str += "bespannen="+filterBespannen+"&";
	if(filterGewicht != '') str += "gewicht="+filterGewicht+"&";
	if(filterBladgrootte != '') str += "bladgrootte="+filterBladgrootte+"&";
	if(filterLengte != '') str += "lengte="+filterLengte+"&";
	if(filterMerk != '') str += "merk="+filterMerk+"&";
	if(filterSorteer != '') str += "sorteer="+filterSorteer+"&";
	
	var url="/modules/winkel/"+strObject+"-filter.php";
		url=url+"?"+str;

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function productFilter2(strObject)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var str = "";

	var filterMerk = strObject;
	if(filterMerk != '') str += "categorie=/tennis/tennisrackets&merk="+filterMerk;
	var url="/modules/winkel/tennis-filter.php";
		url=url+"?"+str;
	//alert(url);
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function productFilter3(strObject)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var str = "";

	var filterMerk = strObject;
	if(filterMerk != '') str += "categorie=/tennis/tennistassen&merk="+filterMerk;
	var url="/modules/winkel/tennis-filter.php";
		url=url+"?"+str;
	//alert(url);
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged()
{
	if(xmlhttp.readyState==4)
	{
		var divProduct
			divProduct = document.getElementById('producten');
		
			divProduct.innerHTML=xmlhttp.responseText;
	}
}

function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
	{
		// code for IE7+, Firefox, Chrome, Opera, Safari
		return new XMLHttpRequest();
	}
	
	if (window.ActiveXObject)
	{
		// code for IE6, IE5
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	
	return null;
}

function showHideBespannen(layer, action)
{
	var sLayer = document.getElementById(layer);
	var sAction = document.getElementById(action).value;
		
	if(sAction == 1)
	{
		sLayer.style.display = 'block';
	}
	else
	{
		sLayer.style.display = 'none';
	}
}