function rowset() {
	tables=document.getElementsByTagName('table');
	for(i=0;i<tables.length;i++) {
		rows=tables[i].getElementsByTagName('tr');
		rows[0].className = 'rowheader';
		for(x=1;x<rows.length;x++) {
			if(x%2==0) {
				rows[x].className = "roweven";
			} else {
				rows[x].className = "rowodd";
			}
		}
	}
}