Event.observe(
	$(window),
	'load',
	function(event){
		charger();
	}
);
function charger(alias){
   var a;
    $$('A.lien').each(
        function(t){
            t.observe(
                'click',
                function(event){
                    a=event.element();
                    href=a.getAttribute('href');
                     lien=a.getAttribute('lien');
                     new Ajax.Request(
                        'index.php?page=click',
                        {
                            parameters:{url:href,id_lien:lien},
                            action:'post',
                            asynchronous:true
                        }
                    );
                }
            )
        }
    );
}