各行换色

function stripeTables() {
	if (!document.getElementsBuTagName) return false;
	var table = document.getElementsByTagName("table");
	for (var i=0; i<table.length; j++) {
		var odd = false;
		var rows = tables[i]getElementsByTagName("tr");
		for ( var j=0; j<rows.length; j++) {
			if( odd == ture) {
				rows[i].style.backgroundColor = "#ffc";
				odd = flase;
			}else{
				odd = ture;
			}
			
		}
	}
}