function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}





<!--
 //RANDOM RIGHT PROMO IMAGE GENERATOR STARTS
function random_imglink(){
  var myimages=new Array()
  //specify random images below. You can have as many as you wish
  myimages[1]="img/random/001.jpg"
  myimages[2]="img/random/002.jpg"
  myimages[3]="img/random/003.jpg"
  myimages[4]="img/random/004.jpg"

  //specify corresponding links below
  var imagelinks=new Array()
  imagelinks[1]="#"
  imagelinks[2]="#"
  imagelinks[3]="#"
  imagelinks[4]="#"

  var ry=Math.floor(Math.random()*myimages.length)

  if (ry==0)
     ry=1
     document.write('<a href='+'"'+imagelinks[ry]+'"'+'><img src="'+myimages[ry]+'" border=0></a>')
}
//-->



function findElement(element_id) {
  if (document.getElementById && document.getElementById(element_id)) {
    return document.getElementById(element_id);
  } else {
    return false;
  }
}

function hideElement(element_id) {
  element = findElement(element_id)
  if (element) {
    element.style.display = 'none';
    return element;
  } else {
    return false;
  }
}

function showElement(element_id) {
  element = findElement(element_id)
  if (element) {
    element.style.display = '';
    return element;
  } else {
    return false;
  }
}