function PlaySong(url)  
  {  
    window.open(url,null,'toolbar=no, location=no, directories=no, status=no,menubar=no,scrollbars=no,resizable=no, width=200, height=100', false);  
  }  
  
  function ChangeImage(i_id_element, i_new_image)
  {
    var element   = document.getElementById(i_id_element);
    element.src   = i_new_image;
    current_image = i_new_image;
  }
  
  function ChangeImage2(i_id_element, i_action)
  {
    if(!current_image) ChangeImage(i_id_element, content_images[1]);
    else
    {
       for ( var i in content_images )
       {
          if(content_images[i]!=current_image) continue;
          
          if(i_action=='up')
          {
             if(i==AsocArrayCount(content_images)) var change_image = 1;
             else var change_image = parseInt(i) + parseInt(1);
          }
          else
          {
             if(i==1) var change_image = AsocArrayCount(content_images);
             else var change_image = parseInt(i) - parseInt(1);
          }
            
          ChangeImage(i_id_element, content_images[change_image]);
          
          return;
       }
    }
  }
  
  
  function AsocArrayCount(i_asoc_array)
  {
      var i = 0;
      for (var j in i_asoc_array) {
        if (i_asoc_array.propertyIsEnumerable(j)) {
          i++;
        }
      }
      return i;
  }