$(document).ready(function(){	
		

/* Comportement Rollover avec class="rollover" */
attachRollOverEvent = function(imageId){
	$(imageId).mouseover( function(){ $(this).attr("src", $(this).attr("src").replace('.','_roll.')) } );
	$(imageId).mouseout( function(){ $(this).attr("src", $(this).attr("src").replace('_roll','')) } );
}

}
);