function getWindowParameters(width, height, scrollbarsValue) {
  var parameterString;
  var left;
  var top;

  if ( screen.width > 800 ) {
    left = 100;
    top  = 100; }
  else {
    left = 10;
    top  = 10;
  }
  parameterString = "left=" + left + ",top=" + top + ",width=" + width + ",height=" + height + ",scrollbars=" + scrollbarsValue + ",resizable=yes";

  return parameterString;
}

function openPopup(windowName, url, width, height, scrollbarsValue){
  var openedWindow;
  var parameterString;
  parameterString = getWindowParameters(width, height, scrollbarsValue);
//alert("param: [" + parameterString + "], url: [" + url + "]");
  openedWindow = window.open(url, windowName, parameterString);

  // only set focus if not IE4.x
  if (!(navigator.userAgent.indexOf("MSIE 4.") >= 0)) {
    openedWindow.focus();
  }

}

function openInstitutionPopup(windowName, url) {
  var width         = 700;
  var height       = 550;
  var scrollbars = 'no';
  
  openPopup(windowName, url, width, height, scrollbars);
}

function openNewsPopup(windowName, url) {
  var width  = 500;
  var height = 500;
  var scrollbars = 'yes';
  
  openPopup(windowName, url, width, height, scrollbars);
}

function openEmploymentPopup(windowName, url) {
  var width  = 500;
  var height = 550;
  var scrollbars = 'yes';
  
  openPopup(windowName, url, width, height, scrollbars);
}

function openDefaultPopup(windowName, url){
  var width  = 500;
  var height = 500;
  var scrollbars = 'yes';
  
  openPopup(windowName, url, width, height, scrollbars);
}