var resObjekt = null;
try {	
	resObjekt = new ActiveXObject("Microsoft.XMLHTTP");
}	
catch(Error) {	
	try {		
		resObjekt = new ActiveXObject("MSXML2.XMLHTTP");
	}		
	catch(Error) {		
		try {			
			resObjekt = new XMLHttpRequest();
		}			
		catch(Error) {			
			alert("Erzeugung des XMLHttpRequest-Objektes fehlgeschlagen");			
		}		
	}	
}	

var artnr = null;
var picnum = null;

function changeImage(itemnumber,num) {
	
	artnr = itemnumber;
	picnum = num;

	//window.alert('resources/inc/image.inc.php?item='+artnr+'&view='+picnum);

	resObjekt.open('get', 'resources/inc/image.inc.php?item='+artnr+'&view='+picnum, true);
	resObjekt.onreadystatechange = handleResponse;
	resObjekt.send(null);	
	
}


function handleResponse() {

	if(resObjekt.readyState == 4) {
	
		document.images["product-image"].src = "images/product_images/normal/" + resObjekt.responseText;
		document.images["product-image-zoom"].src = "images/product_images/zoom/" + resObjekt.responseText;
	
	} else {
	
		document.images["product-image"].src = 'images/loading.gif';
	
	}

}