function check(p){
if (location.href == p) return false;
if (!event.shiftKey) {
    document.body.scrollTop = 0;
    T1.outerHTML='<h2 id="T1" style="padding:0 30">Loading please wait .</h2>';
	wait();
}
return true;
}

var ID=null;
function wait(){
  clearTimeout(ID);
  T1.innerText += ' .';
  ID = setTimeout('wait()',500);
}

function link_down(p){
document.images['I'+p].src = imgs[p+1].src;
}

function link_up(p){
document.images['I'+p].src = imgs[p].src;
}