var left;
var top;
var old_left;
var old_top;



function getTopOffset() {
    if(document.all) {
	if(document.compatMode == "CSS1Compat")
	    return document.body.parentNode.scrollTop;
	else if(document.body.scrollTop)
	    return document.body.scrollTop;
	else
	    return 0;
    }
    else {
	return window.pageYOffset;
    }
}

function getWindowWidth() {
    if(window.innerWidth)
	return window.innerWidth;
    if(document.compatMode == "CSS1Compat")
	return document.body.parentNode.clientWidth;
    if(document.body.clientWidth)
	return document.body.clientWidth;	
}

function getWindowHeight() {
    if(window.innerHeight)
	return window.innerHeight;
    if(document.compatMode == "CSS1Compat")
	return document.body.parentNode.clientHeight;
    if(document.body.clientHeight)
	return document.body.clientHeight;	
}

var ad = document.getElementById("adRight");

function stickyAd() {
    
    if(document.all) {
        ad.style.pixelLeft = left;
        ad.style.pixelTop = old_top;
    }else {
        ad.style.left = left + "px";
        ad.style.top = old_top + "px";
    }
    
    if(ad.style.display == "none"){
		ad.style.display = "";
	}
//divレイヤーのあるべき位置を指定しています　センター位置の両脇820pxの1/2leftに空ける指定	
	left = parseInt(getWindowWidth()/2 + 790/2) + 5;
    top = parseInt((getWindowHeight()/2 - 255) + getTopOffset());
    
    Position();
	setTimeout("stickyAd()",10);
}

function Position() {
	var sa;
	sa = 1;
	sa = Math.round(Math.abs(top - old_top) / 10);

	if(top > old_top){old_top = old_top + sa;}
	if(top < old_top){old_top = old_top - sa;}
}
//初期位置を指定しています
left = parseInt(getWindowWidth()/2 + 790/2) + 5;
top = parseInt((getWindowHeight()/2 - 580) + getTopOffset());

old_left = left;
old_top = top;
	
stickyAd();