function create_hover(element){
       if($('over_window')) return;
                var div_hover = document.createElement('div');
                div_hover.className = 'over';
                div_hover.id = 'over_window';
                div_hover.style.zindex = '1000';
                div_hover.style.top = getTop(element)  + 70 + 'px';
                div_hover.style.left = getLeft(element)  + 'px';
                div_hover.innerHTML = '<a href="#" onmouseover="function(){return false}">ciao!</a>';
                div_hover.style.display = 'none';
                div_hover.onmouseout=div_hover.onblur = function(){
					//alert('bla!');
                    destroy_hover();
                }
                document.body.appendChild(div_hover);
                new Effect.BlindDown(div_hover);
            }

            function destroy_hover(){
                var todestroy;
                if($('over_window')){
                    todestroy = $('over_window');
                    new Effect.BlindUp(todestroy , {
                        afterFinish : function(){
                            todestroy.parentNode.removeChild(todestroy);

                        }
                    })
                }

            }

function getLeft(l)
{
  if (l.offsetParent) return (l.offsetLeft + getLeft(l.offsetParent));
  else return (l.offsetLeft);
}
function getTop(l)
{
  if (l.offsetParent) return (l.offsetTop + getTop(l.offsetParent));
  else return (l.offsetTop);
}