Changing the javascript value of a URL with hyperlink

Question 1

This code will work for you

window.onload = function () {

   var params = {
         url: "Docs/6-Week Calendar.pdf",
         pdfOpenParams: {
            navpanes: 0,
            toolbar: 0,
            statusbar: 0,
            view: "FitV"
         }
      },
      s = document.getElementById("statement");

   function loadPDF() {
      var msg,
          myPDF = new PDFObject(params).embed("pdf");

      if (myPDF) {
         msg = "The PDF was successfully embedded!";
         s.className = "success";
      } 
      else {
         msg = "It appears the embed didn't work.";
         s.className = "fail";
      }
      s.innerHTML = msg;
   }

   var linklist = document.getElementsByClassName('currmenulist')[0],
       pdfLinks = linklist.getElementsByTagName('a');

   for (var k = 0; k < pdfLinks.length; k++) {

      //here you can add validation, i.e, if href ends with .pdf etc
      if (pdfLinks[k].getAttribute('href') == '' || pdfLinks[k].getAttribute('href') == '#')
         continue;

      pdfLinks[k].addEventListener('click', function (ev) {
         ev.preventDefault();

         params.url = ev.target.getAttribute('href');
         loadPDF();
      });
   }

   loadPDF();
};

Question 2

This should be what you need:

var msg;
var s = document.getElementById("statement");
var params = { 
    url: "Docs/6-Week Calendar.pdf",
    pdfOpenParams: {
        navpanes: 0,
        toolbar: 0,
        statusbar: 0,
        view: "FitV"
    }
};

window.onload = function (){
    var myPDF = new PDFObject(params).embed("pdf");

    if(myPDF){
        msg = "The PDF was successfully embedded!";
        s.className = "success";
    } else {
        msg = "It appears the embed didn't work.";
        s.className = "fail";
    }
    s.innerHTML = msg;
};

$(".currmenulist a").on("click", function(e){
    e.preventDefault();
    params.url = $(this).attr("href");

    var myPDF = new PDFObject(params).embed("pdf");

    if(myPDF){
        msg = "The PDF was successfully embedded!";
        s.className = "success";
    } else {
        msg = "It appears the embed didn't work.";
        s.className = "fail";
    }
    s.innerHTML = msg;
});