// Borrowed from Madison Community Hospital website.

function is_class(obj, cn) {
	return new RegExp('\\b'+cn+'\\b').test(obj.className);
}

function StyleDiv(node, tagToFind) {
	var kids = node.getElementsByTagName(tagToFind);
	var bit = true;
	for(var x = kids.length -1; x>= 0; x--) {
		bit = !bit;
		if(bit)
			kids[x].className += " alt";
	}
}

function StyleTags(TagName, AlternatorTagName) {
	if(!document.getElementsByTagName || !document.getElementById)
		return;
	
	var divs = document.getElementsByTagName(TagName);
	if(divs == null)
		return;
		
	for(var x=divs.length - 1; x>=0; x--) {
		if(is_class(divs[x], "alternator")) {
			StyleDiv(divs[x], AlternatorTagName);
		}
	}
}


StyleTags("table", "tr");