//ajax
var currentImage = 0;
//var numImages = 0;
function getRequestObject(){
    var request_o; 
    var browser = navigator.appName; 
    if(browser == "Microsoft Internet Explorer"){
        request_o = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        request_o = new XMLHttpRequest();
    }
    return request_o; //return the object
}
var http = getRequestObject();
function getDetails(pos,folder) {
	if (pos == "n") {
		currentImage = currentImage + 1;
		if (currentImage > numImages) {
			currentImage = 1
		}
	}
	else {
		currentImage = currentImage - 1;
		if (currentImage < 1) {
			currentImage = numImages;
		}
		
	}
    //build url
	id = currentImage;
    var detailsUrl = "common/detail_data.php?id=" + id + "&folder=" + folder;
	//alert(folder);

    //get data
    http.open("get", detailsUrl);
    http.onreadystatechange = setDetails;
    http.send(null);
}
function setDetails() {
    if(http.readyState == 4){
        var response = http.responseText;
        document.getElementById('details').innerHTML = response;
		document.getElementById('numimg').innerHTML = "[ " + currentImage + " of " + numImages + " ]";
    }
}