// Aternate table rows bewteen odd & even class styles
function alternateTableRowColor( tableName ) {
	var table = document.getElementById(tableName); 
	var allTRs = table.getElementsByTagName("tr"); 
	for (i=0; i <= allTRs.length-1 ; i++) { 
	//allTRs[i].style.backgroundColor = "#ffffff"; 
	allTRs[i].className = (i%2) ? "odd" : "even"; 
	} 
}