function position_wrapper(crossobj){
	var ContentWidth=document.body.scrollWidth;
	var ContentHeight=document.body.scrollHeight;
	if (ContentWidth>755) {
		crossobj.style.marginLeft = (ContentWidth - 755) / 2 + "px";
	} else {
		crossobj.style.marginLeft = 3 + "px";
	}
	if (ContentHeight>559) {
		crossobj.style.marginTop = (ContentHeight - 559) / 2 + "px";
	} else {
		crossobj.style.marginTop = 3 + "px";
	}
}