function getQueryVariable(variable) {
                        var query = window.location.search.substring(1);
                        var vars = query.split("&");
                        for (var i=0;i<vars.length;i++) {
                                    var pair = vars[i].split("=");
                                    if (pair[0] == variable) {
                                                return pair[1];
                                    }
                        } 
            }
           
            function nextPage() {
          
                        window.location.href = window.location.href.substring(0, window.location.href.indexOf("?")) + "?start=" + nextPos;

            }
        
            function prevPage() {
          

                        if (prevPos >= 1) {

                                    window.location.href = window.location.href.substring(0, window.location.href.indexOf("?")) + "?start=" + prevPos;

                        }

            }

            

            function nextLink() {

                        document.write("<a href='javascript:nextPage()'>Next</a>");

            }

            function prevLink() {

                        if (prevPos >= 1) {

                                    document.write("<a href='javascript:prevPage()'>Previous</a>");

                        }

            }

            

            var startPos = 1;

            var sp = getQueryVariable("start");

            if (sp != null && sp != '') {

                        startPos = sp;

            }

            var nextPos = startPos/1 + 10;

            var prevPos = startPos/1 - 10;