/**
 *  Hovertip - easy and elegant tooltips
 *  By Dave Cohen <http://dave-cohen.com>
 *  Licensed under GPL. 
 *  $Date: 2006-09-15 12:49:19 -0700 (Fri, 15 Sep 2006) $
 */

var hovertipMouseX;
var hovertipMouseY;
function hovertipMouseUpdate(e) {
  var mouse = hovertipMouseXY(e);
  hovertipMouseX = mouse[0];
  hovertipMouseY = mouse[1];
}

function hovertipMouseXY(e) {
  if( !e ) {
    if( window.event ) {
      e = window.event;
    } else {
      return;
    }
  }
  if( typeof( e.pageX ) == 'number' ) {
    var xcoord = e.pageX;
    var ycoord = e.pageY;
  } else if( typeof( e.clientX ) == 'number' ) {
    var xcoord = e.clientX;
    var ycoord = e.clientY;
    var badOldBrowser = ( window.navigator.userAgent.indexOf( 'Opera' ) + 1 ) ||
      ( window.ScriptEngine && ScriptEngine().indexOf( 'InScript' ) + 1 ) ||
      ( navigator.vendor == 'KDE' );
    if( !badOldBrowser ) {
      if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
        xcoord += document.body.scrollLeft;
        ycoord += document.body.scrollTop;
      } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
        xcoord += document.documentElement.scrollLeft;
        ycoord += document.documentElement.scrollTop;
      }
    }
  } else {
    return;
  }
  return [xcoord, ycoord];
}

targetSelectByPrevious = function(el, config) {
  return $(el.previousSibling);
}

hovertipPrepare = function(o, config) {
  return o.hover(function() {
      hovertipHideCancel(this);
    }, function() {
      hovertipHideLater(this);
    }).css('position', 'absolute').each(hovertipPosition);
};

hovertipPrepareNoOp = function(o, config) {
  return o;
}

hovertipPosition = function(i) {
  document.body.appendChild(this);
}

hovertipIsVisible = function(el) {
  return (jQuery.css(el, 'display') != 'none');
}

hovertipShowUnderMouse = function(el) {
  hovertipHideCancel(el);
  if (!hovertipIsVisible(el)) {
    el.ht.showing = // keep reference to timer
      window.setTimeout(function() {
          el.ht.tip.css({
              'position':'absolute',
                'top': hovertipMouseY + 'px',
                'left': hovertipMouseX + 'px'})
            .show();
        }, el.ht.config.showDelay);
  }
};

hovertipHideCancel = function(el) {
  if (el.ht.hiding) {
    window.clearTimeout(el.ht.hiding);
    el.ht.hiding = null;
  }  
};

hovertipHideLater = function(el) {
  if (el.ht.showing) {
    window.clearTimeout(el.ht.showing);
    el.ht.showing = null;
  }
  if (el.ht.hiding) {
    window.clearTimeout(el.ht.hiding);
    el.ht.hiding = null;
  }
  el.ht.hiding = 
  window.setTimeout(function() {
      if (el.ht.hiding) {
        el.ht.tip.hide();
      }
    }, el.ht.config.hideDelay);
};

hovertipTargetPrepare = function(o, el, config) {
  return o.addClass(config.attribute + '_target')
  .hover(function() {
      hovertipShowUnderMouse(el);
    },
    function() {
      hovertipHideLater(el);
    });
};

jQuery.fn.hovertipActivate = function(config, targetSelect, tipPrepare, targetPrepare) {
  return this.css('display', 'block')
  .hide() // don't show it until click
  .each(function() {
      if (!this.ht)
        this.ht = new Object();
      this.ht.config = config;
      
      var targets = targetSelect(this, config);
      if (targets && targets.size()) {
        if (!this.ht.targets)
          this.ht.targets = targetPrepare(targets, this, config);
        else
          this.ht.targets.add(targetPrepare(targets, this, config));
        
        targets.mousemove(hovertipMouseUpdate);
        
        if (!this.ht.tip)
          this.ht.tip = tipPrepare($(this), config);
      }
      
    })
  ;
};

function hovertipInit() {
  var clicktipConfig = {'attribute':'clicktip'};
  
  var hovertipConfig = {'attribute':'hovertip',
                        'showDelay': 300,
                        'hideDelay': 700};
  
  var hovertipSelect = 'div.hovertip';
  
  $(hovertipSelect).css('display', 'block').addClass('hovertip_wrap3').
    wrap("<div class='hovertip_wrap0'><div class='hovertip_wrap1'><div class='hovertip_wrap2'>" + 
         "</div></div></div>").each(function() {
           var tooltip = this.parentNode.parentNode.parentNode;
           if (this.getAttribute('target'))
             tooltip.setAttribute('target', this.getAttribute('target'));
           if (this.getAttribute('id')) {
             var id = this.getAttribute('id');
             this.removeAttribute('id');
             tooltip.setAttribute('id', id);
           }
         });
  hovertipSelect = 'div.hovertip_wrap0';
  
 var hovertipSpanSelect = 'span.hovertip';
  $(hovertipSpanSelect).css('display', 'block').addClass('hovertip_wrap3').
    wrap("<span class='hovertip_wrap0'><span class='hovertip_wrap1'><span class='hovertip_wrap2'>" + 
         "</span></span></span>").each(function() {
           var tooltip = this.parentNode.parentNode.parentNode;
           if (this.getAttribute('target'))
             tooltip.setAttribute('target', this.getAttribute('target'));
           if (this.getAttribute('id')) {
             var id = this.getAttribute('id');
             this.removeAttribute('id');
             tooltip.setAttribute('id', id);
           }
         });
  hovertipSpanSelect = 'span.hovertip_wrap0';

  window.setTimeout(function() {
    $(hovertipSpanSelect)
      .hovertipActivate(hovertipConfig,
                        targetSelectByPrevious,
                        hovertipPrepare,
                        hovertipTargetPrepare);
  }, 0);
}