  var imgsOn = new Array();

  var texto0 = "Many of the studies indicate that man may be responsible for the global distribution of amphibian infectious diseases. As such and like with many other infectious diseases the best way to combat this &quot;plague&quot; is to prevent its spread.<br> If you deal with amphibians or are in direct contact with their environment put your cursor on the images to know how you avoid the spread of this disease.";

  var texto1 = "Never introduce animals, plants or any other organism in the environment, because, besides interfering with native species, they may carry pathogens. Now we now that fish may transmit virus that affect amphibians, and in many countries the native amphibians are infected by introduced amphibian species that carry the chytrid fungus.<br> If you detect introduced organisms in your area, get in contact with us.";

  var texto2 = "Never move specimens of adult amphibians, larvae or egg between distinct places even if they are very close since this could contribute to the dispersion of the pathogens." 

  var texto3 = "Avoid accidentally transporting the pathogens yourself. The chytrid fungus does not have a stage that is resistant to desiccation but it can survive in whatever type of organic material that maintains humidity. As such after a trip to the field wash well at the site all the objects that have been in touch with the environment (eg. boots and sample nets). After submerging them in bleach (a bath of 30 seconds is sufficient if you use domestic bleach with at least 4% sodium hypochlorite) or in other suitable disinfectants put them out in the sun for as long as possible."

  var texto4 = "If you donŐt want to use bleach to sterilise the material from the field you can use commercial products specifically sold in veterinary stores. Some suitable products are: Halamid&#174; (www.alpharmaanimalhealth.co.uk) and Virkon&#174; (www.antechh.com).";

  var texto5 = "If you hold amphibians use disposable gloves or if it is necessary to keep them for some time use disposable containers or ones that have been previously sterilised. DonŐt put them in touch with specimens from other areas if you are going to return them to the natural environment. Remember that you must sterilise all equipment before using it.";

  var texto6 ="Tell your friends about the problem of emerging diseases in amphibians and how it is possible to avoid contributing to its spread.";


  function shwtext(num){ 
   var num = parseInt(num);
   switch (num) {
    case 1 : t = texto1;
             num = 0;
                   break;
    case 2 : t = texto2;
             num = 0;
                   break;
    case 3 : t = texto3;
             num = 0;
                   break;
    case 4 : t = texto4;
                   break;
    case 5 : t = texto5;
             num = 0;
                   break;
    case 6 : t = texto6;
             num = 0;
                   break;
    default : t = texto0
              num = 0;
   }
   document.getElementById('cajatexto').innerHTML = "";  
   document.getElementById('cajatexto').innerHTML = t;  
   document.getElementById('foto').src = imgsOn[num].src; 
  }

  function loadimgs() {
   imgsOn[0] = new Image();
   imgsOn[0].src = "images/hacer_foto0.gif";
   imgsOn[4] = new Image();
   imgsOn[4].src = "images/hacer_foto4.gif";
  }