$(document).ready(function(){  	
  
 	$("img.rollover").mouseover(function (){this.src = this.src.replace("_0","_1");});
	$("img.rollover").mouseout(function (){this.src = this.src.replace("_1","_0");});
 
 });
 

jQuery.preloadImages = function(){

  for(var i = 0; i<arguments.length; i++){
    jQuery("<img>").attr("src", arguments[i]);
  }

}

$(document).ready(function(){  	
  
  	$.preloadImages("images/menu_home_1.gif", "images/menu_explore_1.gif", "images/menu_agenda_1.gif", "images/menu_events_1.gif", "images/menu_reservation_1.gif", "images/menu_contact_1.gif");

});