function toggle(el){
	
	if (navigator.appName != "Microsoft Internet Explorer") {
		objclass = 'class';
	}
	else {
		objclass = 'className';
	}
	
	if(el.src.indexOf('expand') != -1){
		el.src = 'modules/mod_articlebydates/tmpl/img/contract.gif';
		el.parentNode.setAttribute(objclass,'titreitemcontract');
		el.parentNode.parentNode.childNodes[1].setAttribute(objclass,'contract');
	}
	else {
		el.src = 'modules/mod_articlebydates/tmpl/img/expand.gif';
		el.parentNode.setAttribute(objclass,'titreitemexpand');
		el.parentNode.parentNode.childNodes[1].setAttribute(objclass,'expand');
		
	}
}