function loadCalendar(month,year) {
  new Ajax.Updater('calendarleft', 'calendar/calendar.php', {method: 'post', postBody:'calmonth='+ month +'&year='+ year +''});
}

function preloader() {
    // counter
    var i = 0;
    // create object
    imageObj = new Image();
    // set image list
    images = new Array();
    images[0]="images/banner.jpg";
    images[1]="images/bodyleft.jpg";
    images[2]="images/bodyright.jpg";
    images[3]="images/footer.jpg";
    // start preloading
    for(i=0; i<=3; i++) 
    {
         imageObj.src=images[i];
    }
}