//setTimeout("location.reload()",10000);
function Koshin(){
  var hiduke=document.lastModified;
  document.write(hiduke);
}

var imgObj = new Image();
imgObj.src = "";

function preload(imgs){
 for(var i = 0; i < imgs.length; i++){
   var imgObj = new Image();
   imgObj.src = imgs[i];
 }
}
preload(["img/navi_a_hover.png"]);