//  query string = http://gallery.html?venue=daniel&total=20

    function queryString(key) {
        var value = null;
        for (var i=0;i<queryString.keys.length;i++) {
            if (queryString.keys[i]==key) {
                value = queryString.values[i]; break;
            }
        }
        return value;
    }

    function queryString_Parse() {
        var query = window.location.search.substring(1);
        var pairs = query.split("&");
        
        for (var i=0;i<pairs.length;i++) {
            var pos = pairs[i].indexOf('=');
            if (pos >= 0) {
                var argname = pairs[i].substring(0,pos);
                var value = pairs[i].substring(pos+1);
                queryString.keys[queryString.keys.length] = argname;
                queryString.values[queryString.values.length] = value;
            }
        }
    }

    queryString.keys = new Array();
    queryString.values = new Array();

	var which_image_loaded = 0;

    queryString_Parse();