function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

function externalLinks() 
{
  var host=document.location.protocol+"//"+document.location.host;
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a");
  for (var i=anchors.length-1; i>=0; i--) 
  {
    var anchor = anchors[i];
    if (anchor.href && anchor.href.indexOf(host)!=0)
    {
      if(!anchor.onclick)
      {
        anchor.onclick = function()
        {
           return confirm("¿Estas apunto de abandonar el sitio Web de CONAPESCA?");
        }
        anchor.target = "_blank";
      }
    }
  }
}
function fileLinks() 
{
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a");
  for (var i=anchors.length-1; i>=0; i--) 
  {
    var anchor = anchors[i];
    if (anchor.href)
    {
      if( anchor.href.indexOf(".pdf")>0 
       || anchor.href.indexOf(".doc")>0
       || anchor.href.indexOf(".xdoc")>0
       || anchor.href.indexOf(".ppt")>0
       || anchor.href.indexOf(".zip")>0
       || anchor.href.indexOf(".rar")>0
       || anchor.href.indexOf(".gzip")>0
       || anchor.href.indexOf(".tar")>0
      )
      {
        anchor.target = "_blank";
      }
    }
  }
}
addLoadEvent(externalLinks);
addLoadEvent(fileLinks);