function pageLoaded() {
   for (i=1; i<=6; i++) {
      id = 'img' + i;
      document.getElementById(id).title = "";
   }
}
function mxy(id, event){
    bexWidth = (window.innerWidth <= 978) ? 960 : window.innerWidth - 18;
    pos_x = event.offsetX?(event.offsetX):event.pageX-Math.floor(0.5*bexWidth)+450;
    pos_y = event.offsetY?(event.offsetY):event.pageY-document.getElementById("header").offsetTop;
    document.getElementById(id).style.top = pos_y + "px";
    document.getElementById(id).style.left = pos_x + "px";
}