window.onload = initPage;

function initPage() {
  externalLinks();
}

function externalLinks() { 
  if(!document.getElementsByTagName) {
    return;
  }
  var anchors = document.getElementsByTagName("a"); 
  for(var i=0; i<anchors.length; i++) { 
    var anchor = anchors[i]; 
    if(anchor.getAttribute("href") && anchor.getAttribute("rel") == "external" || anchor.getAttribute("rel") == "external nofollow" ) {
      anchor.target = "_blank";
    }
  } 
}

function changeImage(image, title) {  
  var pImage;
  pImage = document.getElementById('structure_image_switch');
  pImage.src = 'images/structures/main/' + image;
  pImage.title = title;
}