functions.jquery.js

// Small jQuery addons by Sunny Ripert

// Returns a boolean to know if jQuery object contains elements 
// Example:
//   $('body').exists() # => true
//   $('#doesnt_exist').exists() # => false
$.fn.exists = function() {
  return $(this).length > 0;
}

// Makes links open in popups
// Example:
//   $('a.popup').popup(300, 200)
$.fn.popup = function(width, height) {
  $(this).each(function(i, elem) {
    $(elem).click(function() {
      window.open(elem.href, "", 'width='+width+',height='+height+',scrollbars=yes');
      return false;
    });
  });
}

// Create a tooltip from an anchor link which shows the linked element you hover the link
// Note: Adds the "help" class to the link and the "tooltip" class on the linked element.
// Example:
//   <a href="#about" class="tip">About</a>
//   <p id="about">Interesting facts here</p>
//   <script>$('a.tip').tooltipize()</script>
$.fn.tooltipize = function() {
  return $(this).each(function(i, elem) {
    var link = $(elem).eq(0);
    var tip = $(link.attr('href')).eq(0);

    tip.hide().addClass('tooltip').css({opacity: 0.85});
    link.addClass('help');
    link.attr('title', '').find('img').attr('alt', ''); // désactive le title
    link.click(function(){ return false }); // désactive le clic

    // affiche et recalcule la position au survol
    link.hover(
      function() { // afficher
        tip.show().css({
          left: 30 + link.offset().left + 'px',
          top: 20 + link.offset().top + 'px'
        });
      },
      function() { // cacher
        // IE déplace des blocs au survol si on
        // fait tip.hide() plutôt qu'un déplacement
        tip.css({ left: -8000, top: -8000 });
      }
    );
  });
}