// pop-up
addLoadEvent(setPopups);

function popInstructions(winURL) {
  window.open(winURL,"instructions","width=400,height=400,scrollbars=yes");
}

function popUp(winURL) {
  window.open(winURL,"popup","width=320,height=480,scrollbars=yes");
}

function popUpSmall(winURL) {
  window.open(winURL,"popup","width=200,height=300,scrollbars=yes");
}

function pdfpopUp(winURL) {
  window.open(winURL,"pdf","");
}

function externalpopUp(winURL) {
  window.open(winURL,"external","");
}

function setPopups() {
  if (!document.getElementsByTagName) return false;
  var lnks = document.getElementsByTagName("a");
  for (var i=0; i<lnks.length; i++) {
    if (lnks[i].className == "popup") {
      lnks[i].onclick = function() {
        popUp(this.getAttribute("href"));
        return false;
      }
    }
	else if (lnks[i].className == "instructions") {
      lnks[i].onclick = function() {
        popInstructions(this.getAttribute("href"));
        return false;
      }
    }
    if (lnks[i].className == "smallpopup") {
      lnks[i].onclick = function() {
        popUpSmall(this.getAttribute("href"));
        return false;
      }
    }
	else if (lnks[i].className == "pdf_link") {
      lnks[i].onclick = function() {
        pdfpopUp(this.getAttribute("href"));
        return false;
      }
    }
	else if (lnks[i].className == "external_link") {
      lnks[i].onclick = function() {
        externalpopUp(this.getAttribute("href"));
        return false;
      }
    }
  }
}