function closepreview(event){

$('showimage').hide();

}

function zoomImage(event){
var lien = Event.element(event);
var img = lien.previous('img'); 
var divShow = $('showimage');


divShow.style.left=280+"px"
divShow.style.top=80+"px"

divShow.update('<div align="right" id="dragbar" class="txt-bold"><span id="closetext" onClick="closepreview()">&raquo; Fermer</span><br/><img src="'+img.src+'"></div>');
divShow.show();
if ($$('#dragbar')){
 
 Event.observe($$('#dragbar span')[0] , 'click' , closepreview);
 Event.observe($$('#dragbar img')[0] , 'click' , closepreview);
}

return false;

}