function onLogoEnter(e){
 var tip = jQuery('#ftooltip');
 var x_offset = e.target.offsetLeft+351;// + tag_element.offsetWidth/2 - 100;// result_box.offsetWidth/2;
 var y_offset = e.target.offsetTop + e.target.offsetHeight-12;// + tag_element.offsetHeight;
 tip.css('left', x_offset + 'px');
 tip.css('top' ,  y_offset + 'px'); 
 tip.animate({'opacity':'1', 'marginTop' : '15px'}, 400);                  
}

function onLogoLeave(e){
  var tip = jQuery('#ftooltip');
  tip.animate({'opacity' : 0, 'marginTop' : '0px'}, 400);
  tip.css('left', '-999em');
}

//window.addEvent('domready', function() {  
jQuery(document).ready(function(){
   var top_logo = jQuery('#top_logo');
   top_logo.bind('mouseenter', onLogoEnter);
   top_logo.bind('mouseleave', onLogoLeave);
   var tip = jQuery('#ftooltip');
   tip.css("opacity", "0");
});