//クラスを追加する間隔
var Skip =2;
//スタートする場所
var Start =1;
//要素のID
var tableid ="outline";
window.onload = function() {
	if(document.getElementById(tableid)) {
		var table = document.getElementById(tableid);
		if(!table) return false;
		var rows = table.getElementsByTagName('tr');
		for(var i = 0; i <rows.length; i++){
			if((i+Start) % Skip == 0 ){
				rows[i].className = 'stripe';
			}
		}
	}
}



//ページトップ用
<!-- 
var scrj = 1;
function softScrollBack()
                 {
	if ( window.scrollY )
		{
		/* Mozilla */
		scdist = window.scrollY;
		}
	else if ( window.pageYOffset )
		{
		/* Netscape | Opera */
		scdist = window.pageYOffset;
		}
	else if ( document.documentElement && document.documentElement.scrollTop )
		{
		/* InternetExplorer */
		scdist = document.documentElement.scrollTop;
		}
	else if ( document.body && document.body.scrollTop )
		{
		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;
   }
}