function openPopWin(url){
  popWindow(url, 'popup', 490, 530, 1, 1, 1);
}

function popWindow(urlVal, windowName, widthVal, heightVal, scrollBars, menuBar, reSizeable) {
  var paraString = "width=" + widthVal + ",height=" + heightVal;

  if (scrollBars == 1) paraString += ",scrollbars=yes";
  else paraString += ",scrollbars=no";
  if (menuBar == 1) paraString += ",menubar=yes";
  else paraString += ",menubar=no";
  if(reSizeable == 1) paraString += ",resizable=yes";
  else  paraString += ",resizable=no";

  paraString += ",screenX=0,top=0";

  poppedWindow = window.open(urlVal, windowName, paraString);
  poppedWindow.focus();
}