<!-- ゆっくり最上部へ戻る -->
var scrj = 1;
function SoftScrollBack() {
	if( navigator.appName == "Microsoft Internet Explorer" &&
		document.compatMode == "CSS1Compat"){
		var scdist = document.body.parentNode.scrollTop;
	}
	else{
		var scdist = document.body.scrollTop;
	}
	
	if( scrj < 50 && scdist ){
		scdist = ( scdist > 2 ) ? Math.ceil( scdist*.2) : 1;
		scrj++;
		scrollBy( 0 , -scdist );
		setTimeout( "SoftScrollBack()" , 20 );
	}
	else {
		scrollTo( 0 , 0 );
		scrj = 1;
	}
}