/* page up
----------------------------------------------- */
function pageup() {
 var nv = navigator.userAgent;
 if (nv.match(new RegExp("MSIE 7", "i"))) { posi = document.documentElement.scrollTop; }
 else if (nv.match(new RegExp("MSIE", "i"))) { posi = document.body.scrollTop }
 else { posi = window.pageYOffset; }
 moveObje(posi);
}
function moveObje(position) {
 move = position / 10;
 points = parseInt(position - move);
 scrollTo(0,points);
 if (points > 0) { setTimeout("moveObje(points)",1); }
}


/* 表示位置固定
----------------------------------------------- */

function floatbt() {

 var nv = navigator.userAgent;
 var bt = document.getElementById("pageup");
 var wh = 865;

 if (nv.match(new RegExp("MSIE 7", "i"))) {
 bt.style.left = wh - 5 + "px";
 bt.style.top = document.documentElement.offsetHeight + document.documentElement.scrollTop - 100 + "px";
 }
 else if (nv.match(new RegExp("MSIE", "i"))) {
 bt.style.left =wh - 6 + "px";
 bt.style.top = document.body.offsetHeight + document.body.scrollTop - 100 + "px";
 }
 else if (nv.match(new RegExp("Firefox", "i"))) {
 bt.style.left =wh - 5 + "px";
 bt.style.top = window.pageYOffset + window.innerHeight - 100 + "px";
 }
 else if (nv.match(new RegExp("WIN", "i"))) {
 bt.style.left =wh - 1 + "px";
 bt.style.top = window.pageYOffset + window.innerHeight - 100 + "px";
 }
 else {
 bt.style.left = wh + "px";
 bt.style.top = window.pageYOffset + window.innerHeight - 100 + "px";
 }
 setTimeout("floatbt()", 10);
}